diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/um/os-Linux |
Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'arch/um/os-Linux')
-rw-r--r-- | arch/um/os-Linux/Makefile | 13 | ||||
-rw-r--r-- | arch/um/os-Linux/drivers/Makefile | 13 | ||||
-rw-r--r-- | arch/um/os-Linux/drivers/etap.h | 27 | ||||
-rw-r--r-- | arch/um/os-Linux/drivers/ethertap_kern.c | 119 | ||||
-rw-r--r-- | arch/um/os-Linux/drivers/ethertap_user.c | 240 | ||||
-rw-r--r-- | arch/um/os-Linux/drivers/tuntap.h | 32 | ||||
-rw-r--r-- | arch/um/os-Linux/drivers/tuntap_kern.c | 104 | ||||
-rw-r--r-- | arch/um/os-Linux/drivers/tuntap_user.c | 225 | ||||
-rw-r--r-- | arch/um/os-Linux/elf_aux.c | 66 | ||||
-rw-r--r-- | arch/um/os-Linux/file.c | 680 | ||||
-rw-r--r-- | arch/um/os-Linux/include/file.h | 22 | ||||
-rw-r--r-- | arch/um/os-Linux/process.c | 171 | ||||
-rw-r--r-- | arch/um/os-Linux/signal.c | 48 | ||||
-rw-r--r-- | arch/um/os-Linux/sys-i386/Makefile | 10 | ||||
-rw-r--r-- | arch/um/os-Linux/sys-i386/registers.c | 132 | ||||
-rw-r--r-- | arch/um/os-Linux/sys-x86_64/Makefile | 10 | ||||
-rw-r--r-- | arch/um/os-Linux/sys-x86_64/registers.c | 81 | ||||
-rw-r--r-- | arch/um/os-Linux/time.c | 21 | ||||
-rw-r--r-- | arch/um/os-Linux/tty.c | 61 | ||||
-rw-r--r-- | arch/um/os-Linux/user_syms.c | 95 | ||||
-rw-r--r-- | arch/um/os-Linux/util/Makefile | 4 | ||||
-rw-r--r-- | arch/um/os-Linux/util/mk_user_constants.c | 29 |
22 files changed, 2203 insertions, 0 deletions
diff --git a/arch/um/os-Linux/Makefile b/arch/um/os-Linux/Makefile new file mode 100644 index 000000000000..4ddf540284ce --- /dev/null +++ b/arch/um/os-Linux/Makefile @@ -0,0 +1,13 @@ +# +# Copyright (C) 2000 Jeff Dike (jdike@karaya.com) +# Licensed under the GPL +# + +obj-y = elf_aux.o file.o process.o signal.o time.o tty.o user_syms.o drivers/ \ + sys-$(SUBARCH)/ + +USER_OBJS := elf_aux.o file.o process.o signal.o time.o tty.o + +CFLAGS_user_syms.o += -DSUBARCH_$(SUBARCH) + +include arch/um/scripts/Makefile.rules diff --git a/arch/um/os-Linux/drivers/Makefile b/arch/um/os-Linux/drivers/Makefile new file mode 100644 index 000000000000..6c546dc9222b --- /dev/null +++ b/arch/um/os-Linux/drivers/Makefile @@ -0,0 +1,13 @@ +# +# Copyright (C) 2000, 2002 Jeff Dike (jdike@karaya.com) +# Licensed under the GPL +# + +ethertap-objs := ethertap_kern.o ethertap_user.o +tuntap-objs := tuntap_kern.o tuntap_user.o + +obj-y = +obj-$(CONFIG_UML_NET_ETHERTAP) += ethertap.o +obj-$(CONFIG_UML_NET_TUNTAP) += tuntap.o + +include arch/um/scripts/Makefile.rules diff --git a/arch/um/os-Linux/drivers/etap.h b/arch/um/os-Linux/drivers/etap.h new file mode 100644 index 000000000000..b84f6c4740f7 --- /dev/null +++ b/arch/um/os-Linux/drivers/etap.h @@ -0,0 +1,27 @@ +/* + * Copyright (C) 2001 Jeff Dike (jdike@karaya.com) + * Licensed under the GPL + */ + +#include "net_user.h" + +struct ethertap_data { + char *dev_name; + char *gate_addr; + int data_fd; + int control_fd; + void *dev; +}; + +extern struct net_user_info ethertap_user_info; + +/* + * Overrides for Emacs so that we follow Linus's tabbing style. + * Emacs will notice this stuff at the end of the file and automatically + * adjust the settings for this buffer only. This must remain at the end + * of the file. + * --------------------------------------------------------------------------- + * Local variables: + * c-file-style: "linux" + * End: + */ diff --git a/arch/um/os-Linux/drivers/ethertap_kern.c b/arch/um/os-Linux/drivers/ethertap_kern.c new file mode 100644 index 000000000000..6ae4b19d9f50 --- /dev/null +++ b/arch/um/os-Linux/drivers/ethertap_kern.c @@ -0,0 +1,119 @@ +/* + * Copyright (C) 2001 Lennert Buytenhek (buytenh@gnu.org) and + * James Leu (jleu@mindspring.net). + * Copyright (C) 2001 by various other people who didn't put their name here. + * Licensed under the GPL. + */ + +#include "linux/init.h" +#include "linux/netdevice.h" +#include "linux/etherdevice.h" +#include "net_kern.h" +#include "net_user.h" +#include "etap.h" + +struct ethertap_init { + char *dev_name; + char *gate_addr; +}; + +static void etap_init(struct net_device *dev, void *data) +{ + struct uml_net_private *pri; + struct ethertap_data *epri; + struct ethertap_init *init = data; + + pri = dev->priv; + epri = (struct ethertap_data *) pri->user; + epri->dev_name = init->dev_name; + epri->gate_addr = init->gate_addr; + epri->data_fd = -1; + epri->control_fd = -1; + epri->dev = dev; + + printk("ethertap backend - %s", epri->dev_name); + if (epri->gate_addr != NULL) + printk(", IP = %s", epri->gate_addr); + printk("\n"); +} + +static int etap_read(int fd, struct sk_buff **skb, struct uml_net_private *lp) +{ + int len; + + *skb = ether_adjust_skb(*skb, ETH_HEADER_ETHERTAP); + if(*skb == NULL) return(-ENOMEM); + len = net_recvfrom(fd, (*skb)->mac.raw, + (*skb)->dev->mtu + 2 * ETH_HEADER_ETHERTAP); + if(len <= 0) return(len); + skb_pull(*skb, 2); + len -= 2; + return(len); +} + +static int etap_write(int fd, struct sk_buff **skb, struct uml_net_private *lp) +{ + if(skb_headroom(*skb) < 2){ + struct sk_buff *skb2; + + skb2 = skb_realloc_headroom(*skb, 2); + dev_kfree_skb(*skb); + if (skb2 == NULL) return(-ENOMEM); + *skb = skb2; + } + skb_push(*skb, 2); + return(net_send(fd, (*skb)->data, (*skb)->len)); +} + +struct net_kern_info ethertap_kern_info = { + .init = etap_init, + .protocol = eth_protocol, + .read = etap_read, + .write = etap_write, +}; + +int ethertap_setup(char *str, char **mac_out, void *data) +{ + struct ethertap_init *init = data; + + *init = ((struct ethertap_init) + { .dev_name = NULL, + .gate_addr = NULL }); + if(tap_setup_common(str, "ethertap", &init->dev_name, mac_out, + &init->gate_addr)) + return(0); + if(init->dev_name == NULL){ + printk("ethertap_setup : Missing tap device name\n"); + return(0); + } + + return(1); +} + +static struct transport ethertap_transport = { + .list = LIST_HEAD_INIT(ethertap_transport.list), + .name = "ethertap", + .setup = ethertap_setup, + .user = ðertap_user_info, + .kern = ðertap_kern_info, + .private_size = sizeof(struct ethertap_data), +}; + +static int register_ethertap(void) +{ + register_transport(ðertap_transport); + return(1); +} + +__initcall(register_ethertap); + +/* + * Overrides for Emacs so that we follow Linus's tabbing style. + * Emacs will notice this stuff at the end of the file and automatically + * adjust the settings for this buffer only. This must remain at the end + * of the file. + * --------------------------------------------------------------------------- + * Local variables: + * c-file-style: "linux" + * End: + */ diff --git a/arch/um/os-Linux/drivers/ethertap_user.c b/arch/um/os-Linux/drivers/ethertap_user.c new file mode 100644 index 000000000000..cd4d6544da71 --- /dev/null +++ b/arch/um/os-Linux/drivers/ethertap_user.c @@ -0,0 +1,240 @@ +/* + * Copyright (C) 2001 Lennert Buytenhek (buytenh@gnu.org) and + * James Leu (jleu@mindspring.net). + * Copyright (C) 2001 by various other people who didn't put their name here. + * Licensed under the GPL. + */ + +#include <stdio.h> +#include <unistd.h> +#include <stddef.h> +#include <stdlib.h> +#include <sys/errno.h> +#include <sys/socket.h> +#include <sys/wait.h> +#include <sys/un.h> +#include <net/if.h> +#include "user.h" +#include "kern_util.h" +#include "user_util.h" +#include "net_user.h" +#include "etap.h" +#include "helper.h" +#include "os.h" + +#define MAX_PACKET ETH_MAX_PACKET + +void etap_user_init(void *data, void *dev) +{ + struct ethertap_data *pri = data; + + pri->dev = dev; +} + +struct addr_change { + enum { ADD_ADDR, DEL_ADDR } what; + unsigned char addr[4]; + unsigned char netmask[4]; +}; + +static void etap_change(int op, unsigned char *addr, unsigned char *netmask, + int fd) +{ + struct addr_change change; + void *output; + int n; + + change.what = op; + memcpy(change.addr, addr, sizeof(change.addr)); + memcpy(change.netmask, netmask, sizeof(change.netmask)); + n = os_write_file(fd, &change, sizeof(change)); + if(n != sizeof(change)) + printk("etap_change - request failed, err = %d\n", -n); + output = um_kmalloc(page_size()); + if(output == NULL) + printk("etap_change : Failed to allocate output buffer\n"); + read_output(fd, output, page_size()); + if(output != NULL){ + printk("%s", output); + kfree(output); + } +} + +static void etap_open_addr(unsigned char *addr, unsigned char *netmask, + void *arg) +{ + etap_change(ADD_ADDR, addr, netmask, *((int *) arg)); +} + +static void etap_close_addr(unsigned char *addr, unsigned char *netmask, + void *arg) +{ + etap_change(DEL_ADDR, addr, netmask, *((int *) arg)); +} + +struct etap_pre_exec_data { + int control_remote; + int control_me; + int data_me; +}; + +static void etap_pre_exec(void *arg) +{ + struct etap_pre_exec_data *data = arg; + + dup2(data->control_remote, 1); + os_close_file(data->data_me); + os_close_file(data->control_me); +} + +static int etap_tramp(char *dev, char *gate, int control_me, + int control_remote, int data_me, int data_remote) +{ + struct etap_pre_exec_data pe_data; + int pid, status, err, n; + char version_buf[sizeof("nnnnn\0")]; + char data_fd_buf[sizeof("nnnnnn\0")]; + char gate_buf[sizeof("nnn.nnn.nnn.nnn\0")]; + char *setup_args[] = { "uml_net", version_buf, "ethertap", dev, + data_fd_buf, gate_buf, NULL }; + char *nosetup_args[] = { "uml_net", version_buf, "ethertap", + dev, data_fd_buf, NULL }; + char **args, c; + + sprintf(data_fd_buf, "%d", data_remote); + sprintf(version_buf, "%d", UML_NET_VERSION); + if(gate != NULL){ + strcpy(gate_buf, gate); + args = setup_args; + } + else args = nosetup_args; + + err = 0; + pe_data.control_remote = control_remote; + pe_data.control_me = control_me; + pe_data.data_me = data_me; + pid = run_helper(etap_pre_exec, &pe_data, args, NULL); + + if(pid < 0) err = pid; + os_close_file(data_remote); + os_close_file(control_remote); + n = os_read_file(control_me, &c, sizeof(c)); + if(n != sizeof(c)){ + printk("etap_tramp : read of status failed, err = %d\n", -n); + return(-EINVAL); + } + if(c != 1){ + printk("etap_tramp : uml_net failed\n"); + err = -EINVAL; + CATCH_EINTR(n = waitpid(pid, &status, 0)); + if(n < 0) + err = -errno; + else if(!WIFEXITED(status) || (WEXITSTATUS(status) != 1)) + printk("uml_net didn't exit with status 1\n"); + } + return(err); +} + +static int etap_open(void *data) +{ + struct ethertap_data *pri = data; + char *output; + int data_fds[2], control_fds[2], err, output_len; + + err = tap_open_common(pri->dev, pri->gate_addr); + if(err) return(err); + + err = os_pipe(data_fds, 0, 0); + if(err < 0){ + printk("data os_pipe failed - err = %d\n", -err); + return(err); + } + + err = os_pipe(control_fds, 1, 0); + if(err < 0){ + printk("control os_pipe failed - err = %d\n", -err); + return(err); + } + + err = etap_tramp(pri->dev_name, pri->gate_addr, control_fds[0], + control_fds[1], data_fds[0], data_fds[1]); + output_len = page_size(); + output = um_kmalloc(output_len); + read_output(control_fds[0], output, output_len); + + if(output == NULL) + printk("etap_open : failed to allocate output buffer\n"); + else { + printk("%s", output); + kfree(output); + } + + if(err < 0){ + printk("etap_tramp failed - err = %d\n", -err); + return(err); + } + + pri->data_fd = data_fds[0]; + pri->control_fd = control_fds[0]; + iter_addresses(pri->dev, etap_open_addr, &pri->control_fd); + return(data_fds[0]); +} + +static void etap_close(int fd, void *data) +{ + struct ethertap_data *pri = data; + + iter_addresses(pri->dev, etap_close_addr, &pri->control_fd); + os_close_file(fd); + os_shutdown_socket(pri->data_fd, 1, 1); + os_close_file(pri->data_fd); + pri->data_fd = -1; + os_close_file(pri->control_fd); + pri->control_fd = -1; +} + +static int etap_set_mtu(int mtu, void *data) +{ + return(mtu); +} + +static void etap_add_addr(unsigned char *addr, unsigned char *netmask, + void *data) +{ + struct ethertap_data *pri = data; + + tap_check_ips(pri->gate_addr, addr); + if(pri->control_fd == -1) return; + etap_open_addr(addr, netmask, &pri->control_fd); +} + +static void etap_del_addr(unsigned char *addr, unsigned char *netmask, + void *data) +{ + struct ethertap_data *pri = data; + + if(pri->control_fd == -1) return; + etap_close_addr(addr, netmask, &pri->control_fd); +} + +struct net_user_info ethertap_user_info = { + .init = etap_user_init, + .open = etap_open, + .close = etap_close, + .remove = NULL, + .set_mtu = etap_set_mtu, + .add_address = etap_add_addr, + .delete_address = etap_del_addr, + .max_packet = MAX_PACKET - ETH_HEADER_ETHERTAP +}; + +/* + * Overrides for Emacs so that we follow Linus's tabbing style. + * Emacs will notice this stuff at the end of the file and automatically + * adjust the settings for this buffer only. This must remain at the end + * of the file. + * --------------------------------------------------------------------------- + * Local variables: + * c-file-style: "linux" + * End: + */ diff --git a/arch/um/os-Linux/drivers/tuntap.h b/arch/um/os-Linux/drivers/tuntap.h new file mode 100644 index 000000000000..25d4a2868814 --- /dev/null +++ b/arch/um/os-Linux/drivers/tuntap.h @@ -0,0 +1,32 @@ +/* + * Copyright (C) 2001, 2002 Jeff Dike (jdike@karaya.com) + * Licensed under the GPL + */ + +#ifndef __UM_TUNTAP_H +#define __UM_TUNTAP_H + +#include "net_user.h" + +struct tuntap_data { + char *dev_name; + int fixed_config; + char *gate_addr; + int fd; + void *dev; +}; + +extern struct net_user_info tuntap_user_info; + +#endif + +/* + * Overrides for Emacs so that we follow Linus's tabbing style. + * Emacs will notice this stuff at the end of the file and automatically + * adjust the settings for this buffer only. This must remain at the end + * of the file. + * --------------------------------------------------------------------------- + * Local variables: + * c-file-style: "linux" + * End: + */ diff --git a/arch/um/os-Linux/drivers/tuntap_kern.c b/arch/um/os-Linux/drivers/tuntap_kern.c new file mode 100644 index 000000000000..4202b9ebad4c --- /dev/null +++ b/arch/um/os-Linux/drivers/tuntap_kern.c @@ -0,0 +1,104 @@ +/* + * Copyright (C) 2001 Jeff Dike (jdike@karaya.com) + * Licensed under the GPL + */ + +#include "linux/stddef.h" +#include "linux/netdevice.h" +#include "linux/etherdevice.h" +#include "linux/skbuff.h" +#include "linux/init.h" +#include "asm/errno.h" +#include "net_kern.h" +#include "net_user.h" +#include "tuntap.h" + +struct tuntap_init { + char *dev_name; + char *gate_addr; +}; + +static void tuntap_init(struct net_device *dev, void *data) +{ + struct uml_net_private *pri; + struct tuntap_data *tpri; + struct tuntap_init *init = data; + + pri = dev->priv; + tpri = (struct tuntap_data *) pri->user; + tpri->dev_name = init->dev_name; + tpri->fixed_config = (init->dev_name != NULL); + tpri->gate_addr = init->gate_addr; + tpri->fd = -1; + tpri->dev = dev; + + printk("TUN/TAP backend - "); + if (tpri->gate_addr != NULL) + printk("IP = %s", tpri->gate_addr); + printk("\n"); +} + +static int tuntap_read(int fd, struct sk_buff **skb, + struct uml_net_private *lp) +{ + *skb = ether_adjust_skb(*skb, ETH_HEADER_OTHER); + if(*skb == NULL) return(-ENOMEM); + return(net_read(fd, (*skb)->mac.raw, + (*skb)->dev->mtu + ETH_HEADER_OTHER)); +} + +static int tuntap_write(int fd, struct sk_buff **skb, + struct uml_net_private *lp) +{ + return(net_write(fd, (*skb)->data, (*skb)->len)); +} + +struct net_kern_info tuntap_kern_info = { + .init = tuntap_init, + .protocol = eth_protocol, + .read = tuntap_read, + .write = tuntap_write, +}; + +int tuntap_setup(char *str, char **mac_out, void *data) +{ + struct tuntap_init *init = data; + + *init = ((struct tuntap_init) + { .dev_name = NULL, + .gate_addr = NULL }); + if(tap_setup_common(str, "tuntap", &init->dev_name, mac_out, + &init->gate_addr)) + return(0); + + return(1); +} + +static struct transport tuntap_transport = { + .list = LIST_HEAD_INIT(tuntap_transport.list), + .name = "tuntap", + .setup = tuntap_setup, + .user = &tuntap_user_info, + .kern = &tuntap_kern_info, + .private_size = sizeof(struct tuntap_data), + .setup_size = sizeof(struct tuntap_init), +}; + +static int register_tuntap(void) +{ + register_transport(&tuntap_transport); + return(1); +} + +__initcall(register_tuntap); + +/* + * Overrides for Emacs so that we follow Linus's tabbing style. + * Emacs will notice this stuff at the end of the file and automatically + * adjust the settings for this buffer only. This must remain at the end + * of the file. + * --------------------------------------------------------------------------- + * Local variables: + * c-file-style: "linux" + * End: + */ diff --git a/arch/um/os-Linux/drivers/tuntap_user.c b/arch/um/os-Linux/drivers/tuntap_user.c new file mode 100644 index 000000000000..4b83c6c3f48d --- /dev/null +++ b/arch/um/os-Linux/drivers/tuntap_user.c @@ -0,0 +1,225 @@ +/* + * Copyright (C) 2001, 2002 Jeff Dike (jdike@karaya.com) + * Licensed under the GPL + */ + +#include <stdio.h> +#include <stddef.h> +#include <stdlib.h> +#include <unistd.h> +#include <errno.h> +#include <sys/wait.h> +#include <sys/socket.h> +#include <sys/un.h> +#include <sys/uio.h> +#include <sys/ioctl.h> +#include <net/if.h> +#include <linux/if_tun.h> +#include "net_user.h" +#include "tuntap.h" +#include "kern_util.h" +#include "user_util.h" +#include "user.h" +#include "helper.h" +#include "os.h" + +#define MAX_PACKET ETH_MAX_PACKET + +void tuntap_user_init(void *data, void *dev) +{ + struct tuntap_data *pri = data; + + pri->dev = dev; +} + +static void tuntap_add_addr(unsigned char *addr, unsigned char *netmask, + void *data) +{ + struct tuntap_data *pri = data; + + tap_check_ips(pri->gate_addr, addr); + if((pri->fd == -1) || pri->fixed_config) return; + open_addr(addr, netmask, pri->dev_name); +} + +static void tuntap_del_addr(unsigned char *addr, unsigned char *netmask, + void *data) +{ + struct tuntap_data *pri = data; + + if((pri->fd == -1) || pri->fixed_config) return; + close_addr(addr, netmask, pri->dev_name); +} + +struct tuntap_pre_exec_data { + int stdout; + int close_me; +}; + +static void tuntap_pre_exec(void *arg) +{ + struct tuntap_pre_exec_data *data = arg; + + dup2(data->stdout, 1); + os_close_file(data->close_me); +} + +static int tuntap_open_tramp(char *gate, int *fd_out, int me, int remote, + char *buffer, int buffer_len, int *used_out) +{ + struct tuntap_pre_exec_data data; + char version_buf[sizeof("nnnnn\0")]; + char *argv[] = { "uml_net", version_buf, "tuntap", "up", gate, + NULL }; + char buf[CMSG_SPACE(sizeof(*fd_out))]; + struct msghdr msg; + struct cmsghdr *cmsg; + struct iovec iov; + int pid, n; + + sprintf(version_buf, "%d", UML_NET_VERSION); + + data.stdout = remote; + data.close_me = me; + + pid = run_helper(tuntap_pre_exec, &data, argv, NULL); + + if(pid < 0) return(-pid); + + os_close_file(remote); + + msg.msg_name = NULL; + msg.msg_namelen = 0; + if(buffer != NULL){ + iov = ((struct iovec) { buffer, buffer_len }); + msg.msg_iov = &iov; + msg.msg_iovlen = 1; + } + else { + msg.msg_iov = NULL; + msg.msg_iovlen = 0; + } + msg.msg_control = buf; + msg.msg_controllen = sizeof(buf); + msg.msg_flags = 0; + n = recvmsg(me, &msg, 0); + *used_out = n; + if(n < 0){ + printk("tuntap_open_tramp : recvmsg failed - errno = %d\n", + errno); + return(-errno); + } + CATCH_EINTR(waitpid(pid, NULL, 0)); + + cmsg = CMSG_FIRSTHDR(&msg); + if(cmsg == NULL){ + printk("tuntap_open_tramp : didn't receive a message\n"); + return(-EINVAL); + } + if((cmsg->cmsg_level != SOL_SOCKET) || + (cmsg->cmsg_type != SCM_RIGHTS)){ + printk("tuntap_open_tramp : didn't receive a descriptor\n"); + return(-EINVAL); + } + *fd_out = ((int *) CMSG_DATA(cmsg))[0]; + return(0); +} + +static int tuntap_open(void *data) +{ + struct ifreq ifr; + struct tuntap_data *pri = data; + char *output, *buffer; + int err, fds[2], len, used; + + err = tap_open_common(pri->dev, pri->gate_addr); + if(err < 0) + return(err); + + if(pri->fixed_config){ + pri->fd = os_open_file("/dev/net/tun", of_rdwr(OPENFLAGS()), 0); + if(pri->fd < 0){ + printk("Failed to open /dev/net/tun, err = %d\n", + -pri->fd); + return(pri->fd); + } + memset(&ifr, 0, sizeof(ifr)); + ifr.ifr_flags = IFF_TAP | IFF_NO_PI; + strlcpy(ifr.ifr_name, pri->dev_name, sizeof(ifr.ifr_name)); + if(ioctl(pri->fd, TUNSETIFF, (void *) &ifr) < 0){ + printk("TUNSETIFF failed, errno = %d\n", errno); + os_close_file(pri->fd); + return(-errno); + } + } + else { + err = os_pipe(fds, 0, 0); + if(err < 0){ + printk("tuntap_open : os_pipe failed - err = %d\n", + -err); + return(err); + } + + buffer = get_output_buffer(&len); + if(buffer != NULL) len--; + used = 0; + + err = tuntap_open_tramp(pri->gate_addr, &pri->fd, fds[0], + fds[1], buffer, len, &used); + + output = buffer; + if(err < 0) { + printk("%s", output); + free_output_buffer(buffer); + printk("tuntap_open_tramp failed - err = %d\n", -err); + return(err); + } + + pri->dev_name = uml_strdup(buffer); + output += IFNAMSIZ; + printk("%s", output); + free_output_buffer(buffer); + + os_close_file(fds[0]); + iter_addresses(pri->dev, open_addr, pri->dev_name); + } + + return(pri->fd); +} + +static void tuntap_close(int fd, void *data) +{ + struct tuntap_data *pri = data; + + if(!pri->fixed_config) + iter_addresses(pri->dev, close_addr, pri->dev_name); + os_close_file(fd); + pri->fd = -1; +} + +static int tuntap_set_mtu(int mtu, void *data) +{ + return(mtu); +} + +struct net_user_info tuntap_user_info = { + .init = tuntap_user_init, + .open = tuntap_open, + .close = tuntap_close, + .remove = NULL, + .set_mtu = tuntap_set_mtu, + .add_address = tuntap_add_addr, + .delete_address = tuntap_del_addr, + .max_packet = MAX_PACKET +}; + +/* + * Overrides for Emacs so that we follow Linus's tabbing style. + * Emacs will notice this stuff at the end of the file and automatically + * adjust the settings for this buffer only. This must remain at the end + * of the file. + * --------------------------------------------------------------------------- + * Local variables: + * c-file-style: "linux" + * End: + */ diff --git a/arch/um/os-Linux/elf_aux.c b/arch/um/os-Linux/elf_aux.c new file mode 100644 index 000000000000..9aee0b62ebca --- /dev/null +++ b/arch/um/os-Linux/elf_aux.c @@ -0,0 +1,66 @@ +/* + * arch/um/kernel/elf_aux.c + * + * Scan the Elf auxiliary vector provided by the host to extract + * information about vsyscall-page, etc. + * + * Copyright (C) 2004 Fujitsu Siemens Computers GmbH + * Author: Bodo Stroesser (bodo.stroesser@fujitsu-siemens.com) + */ +#include <elf.h> +#include <stddef.h> +#include "init.h" +#include "elf_user.h" + +#if ELF_CLASS == ELFCLASS32 +typedef Elf32_auxv_t elf_auxv_t; +#else +typedef Elf64_auxv_t elf_auxv_t; +#endif + +char * elf_aux_platform; +long elf_aux_hwcap; + +unsigned long vsyscall_ehdr; +unsigned long vsyscall_end; + +unsigned long __kernel_vsyscall; + +__init void scan_elf_aux( char **envp) +{ + long page_size = 0; + elf_auxv_t * auxv; + + while ( *envp++ != NULL) ; + + for ( auxv = (elf_auxv_t *)envp; auxv->a_type != AT_NULL; auxv++) { + switch ( auxv->a_type ) { + case AT_SYSINFO: + __kernel_vsyscall = auxv->a_un.a_val; + break; + case AT_SYSINFO_EHDR: + vsyscall_ehdr = auxv->a_un.a_val; + break; + case AT_HWCAP: + elf_aux_hwcap = auxv->a_un.a_val; + break; + case AT_PLATFORM: + elf_aux_platform = auxv->a_un.a_ptr; + break; + case AT_PAGESZ: + page_size = auxv->a_un.a_val; + break; + } + } + if ( ! __kernel_vsyscall || ! vsyscall_ehdr || + ! elf_aux_hwcap || ! elf_aux_platform || + ! page_size || (vsyscall_ehdr % page_size) ) { + __kernel_vsyscall = 0; + vsyscall_ehdr = 0; + elf_aux_hwcap = 0; + elf_aux_platform = "i586"; + } + else { + vsyscall_end = vsyscall_ehdr + page_size; + } +} diff --git a/arch/um/os-Linux/file.c b/arch/um/os-Linux/file.c new file mode 100644 index 000000000000..77d4066d1af8 --- /dev/null +++ b/arch/um/os-Linux/file.c @@ -0,0 +1,680 @@ +/* + * Copyright (C) 2002 Jeff Dike (jdike@karaya.com) + * Licensed under the GPL + */ + +#include <stdio.h> +#include <unistd.h> +#include <errno.h> +#include <fcntl.h> +#include <signal.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <sys/socket.h> +#include <sys/un.h> +#include <sys/ioctl.h> +#include <sys/mount.h> +#include <sys/uio.h> +#include "os.h" +#include "user.h" +#include "kern_util.h" + +static void copy_stat(struct uml_stat *dst, struct stat64 *src) +{ + *dst = ((struct uml_stat) { + .ust_dev = src->st_dev, /* device */ + .ust_ino = src->st_ino, /* inode */ + .ust_mode = src->st_mode, /* protection */ + .ust_nlink = src->st_nlink, /* number of hard links */ + .ust_uid = src->st_uid, /* user ID of owner */ + .ust_gid = src->st_gid, /* group ID of owner */ + .ust_size = src->st_size, /* total size, in bytes */ + .ust_blksize = src->st_blksize, /* blocksize for filesys I/O */ + .ust_blocks = src->st_blocks, /* number of blocks allocated */ + .ust_atime = src->st_atime, /* time of last access */ + .ust_mtime = src->st_mtime, /* time of last modification */ + .ust_ctime = src->st_ctime, /* time of last change */ + }); +} + +int os_stat_fd(const int fd, struct uml_stat *ubuf) +{ + struct stat64 sbuf; + int err; + + do { + err = fstat64(fd, &sbuf); + } while((err < 0) && (errno == EINTR)) ; + + if(err < 0) + return(-errno); + + if(ubuf != NULL) + copy_stat(ubuf, &sbuf); + return(err); +} + +int os_stat_file(const char *file_name, struct uml_stat *ubuf) +{ + struct stat64 sbuf; + int err; + + do { + err = stat64(file_name, &sbuf); + } while((err < 0) && (errno == EINTR)) ; + + if(err < 0) + return(-errno); + + if(ubuf != NULL) + copy_stat(ubuf, &sbuf); + return(err); +} + +int os_access(const char* file, int mode) +{ + int amode, err; + + amode=(mode&OS_ACC_R_OK ? R_OK : 0) | (mode&OS_ACC_W_OK ? W_OK : 0) | + (mode&OS_ACC_X_OK ? X_OK : 0) | (mode&OS_ACC_F_OK ? F_OK : 0) ; + + err = access(file, amode); + if(err < 0) + return(-errno); + + return(0); +} + +void os_print_error(int error, const char* str) +{ + errno = error < 0 ? -error : error; + + perror(str); +} + +/* FIXME? required only by hostaudio (because it passes ioctls verbatim) */ +int os_ioctl_generic(int fd, unsigned int cmd, unsigned long arg) +{ + int err; + + err = ioctl(fd, cmd, arg); + if(err < 0) + return(-errno); + + return(err); +} + +int os_window_size(int fd, int *rows, int *cols) +{ + struct winsize size; + + if(ioctl(fd, TIOCGWINSZ, &size) < 0) + return(-errno); + + *rows = size.ws_row; + *cols = size.ws_col; + + return(0); +} + +int os_new_tty_pgrp(int fd, int pid) +{ + if(ioctl(fd, TIOCSCTTY, 0) < 0){ + printk("TIOCSCTTY failed, errno = %d\n", errno); + return(-errno); + } + + if(tcsetpgrp(fd, pid) < 0){ + printk("tcsetpgrp failed, errno = %d\n", errno); + return(-errno); + } + + return(0); +} + +/* FIXME: ensure namebuf in os_get_if_name is big enough */ +int os_get_ifname(int fd, char* namebuf) +{ + if(ioctl(fd, SIOCGIFNAME, namebuf) < 0) + return(-errno); + + return(0); +} + +int os_set_slip(int fd) +{ + int disc, sencap; + + disc = N_SLIP; + if(ioctl(fd, TIOCSETD, &disc) < 0){ + printk("Failed to set slip line discipline - " + "errno = %d\n", errno); + return(-errno); + } + + sencap = 0; + if(ioctl(fd, SIOCSIFENCAP, &sencap) < 0){ + printk("Failed to set slip encapsulation - " + "errno = %d\n", errno); + return(-errno); + } + + return(0); +} + +int os_set_owner(int fd, int pid) +{ + if(fcntl(fd, F_SETOWN, pid) < 0){ + int save_errno = errno; + + if(fcntl(fd, F_GETOWN, 0) != pid) + return(-save_errno); + } + + return(0); +} + +/* FIXME? moved wholesale from sigio_user.c to get fcntls out of that file */ +int os_sigio_async(int master, int slave) +{ + int flags; + + flags = fcntl(master, F_GETFL); + if(flags < 0) { + printk("fcntl F_GETFL failed, errno = %d\n", errno); + return(-errno); + } + + if((fcntl(master, F_SETFL, flags | O_NONBLOCK | O_ASYNC) < 0) || + (fcntl(master, F_SETOWN, os_getpid()) < 0)){ + printk("fcntl F_SETFL or F_SETOWN failed, errno = %d\n", + errno); + return(-errno); + } + + if((fcntl(slave, F_SETFL, flags | O_NONBLOCK) < 0)){ + printk("fcntl F_SETFL failed, errno = %d\n", errno); + return(-errno); + } + + return(0); +} + +int os_mode_fd(int fd, int mode) +{ + int err; + + do { + err = fchmod(fd, mode); + } while((err < 0) && (errno==EINTR)) ; + + if(err < 0) + return(-errno); + + return(0); +} + +int os_file_type(char *file) +{ + struct uml_stat buf; + int err; + + err = os_stat_file(file, &buf); + if(err < 0) + return(err); + + if(S_ISDIR(buf.ust_mode)) return(OS_TYPE_DIR); + else if(S_ISLNK(buf.ust_mode)) return(OS_TYPE_SYMLINK); + else if(S_ISCHR(buf.ust_mode)) return(OS_TYPE_CHARDEV); + else if(S_ISBLK(buf.ust_mode)) return(OS_TYPE_BLOCKDEV); + else if(S_ISFIFO(buf.ust_mode)) return(OS_TYPE_FIFO); + else if(S_ISSOCK(buf.ust_mode)) return(OS_TYPE_SOCK); + else return(OS_TYPE_FILE); +} + +int os_file_mode(char *file, struct openflags *mode_out) +{ + int err; + + *mode_out = OPENFLAGS(); + + err = os_access(file, OS_ACC_W_OK); + if((err < 0) && (err != -EACCES)) + return(err); + + *mode_out = of_write(*mode_out); + + err = os_access(file, OS_ACC_R_OK); + if((err < 0) && (err != -EACCES)) + return(err); + + *mode_out = of_read(*mode_out); + + return(0); +} + +int os_open_file(char *file, struct openflags flags, int mode) +{ + int fd, f = 0; + + if(flags.r && flags.w) f = O_RDWR; + else if(flags.r) f = O_RDONLY; + else if(flags.w) f = O_WRONLY; + else f = 0; + + if(flags.s) f |= O_SYNC; + if(flags.c) f |= O_CREAT; + if(flags.t) f |= O_TRUNC; + if(flags.e) f |= O_EXCL; + + fd = open64(file, f, mode); + if(fd < 0) + return(-errno); + + if(flags.cl && fcntl(fd, F_SETFD, 1)){ + os_close_file(fd); + return(-errno); + } + + return(fd); +} + +int os_connect_socket(char *name) +{ + struct sockaddr_un sock; + int fd, err; + + sock.sun_family = AF_UNIX; + snprintf(sock.sun_path, sizeof(sock.sun_path), "%s", name); + + fd = socket(AF_UNIX, SOCK_STREAM, 0); + if(fd < 0) + return(fd); + + err = connect(fd, (struct sockaddr *) &sock, sizeof(sock)); + if(err) + return(-errno); + + return(fd); +} + +void os_close_file(int fd) +{ + close(fd); +} + +int os_seek_file(int fd, __u64 offset) +{ + __u64 actual; + + actual = lseek64(fd, offset, SEEK_SET); + if(actual != offset) + return(-errno); + return(0); +} + +static int fault_buffer(void *start, int len, + int (*copy_proc)(void *addr, void *buf, int len)) +{ + int page = getpagesize(), i; + char c; + + for(i = 0; i < len; i += page){ + if((*copy_proc)(start + i, &c, sizeof(c))) + return(-EFAULT); + } + if((len % page) != 0){ + if((*copy_proc)(start + len - 1, &c, sizeof(c))) + return(-EFAULT); + } + return(0); +} + +static int file_io(int fd, void *buf, int len, + int (*io_proc)(int fd, void *buf, int len), + int (*copy_user_proc)(void *addr, void *buf, int len)) +{ + int n, err; + + do { + n = (*io_proc)(fd, buf, len); + if((n < 0) && (errno == EFAULT)){ + err = fault_buffer(buf, len, copy_user_proc); + if(err) + return(err); + n = (*io_proc)(fd, buf, len); + } + } while((n < 0) && (errno == EINTR)); + + if(n < 0) + return(-errno); + return(n); +} + +int os_read_file(int fd, void *buf, int len) +{ + return(file_io(fd, buf, len, (int (*)(int, void *, int)) read, + copy_from_user_proc)); +} + +int os_write_file(int fd, const void *buf, int len) +{ + return(file_io(fd, (void *) buf, len, + (int (*)(int, void *, int)) write, copy_to_user_proc)); +} + +int os_file_size(char *file, long long *size_out) +{ + struct uml_stat buf; + int err; + + err = os_stat_file(file, &buf); + if(err < 0){ + printk("Couldn't stat \"%s\" : err = %d\n", file, -err); + return(err); + } + + if(S_ISBLK(buf.ust_mode)){ + int fd, blocks; + + fd = os_open_file(file, of_read(OPENFLAGS()), 0); + if(fd < 0){ + printk("Couldn't open \"%s\", errno = %d\n", file, -fd); + return(fd); + } + if(ioctl(fd, BLKGETSIZE, &blocks) < 0){ + printk("Couldn't get the block size of \"%s\", " + "errno = %d\n", file, errno); + err = -errno; + os_close_file(fd); + return(err); + } + *size_out = ((long long) blocks) * 512; + os_close_file(fd); + return(0); + } + *size_out = buf.ust_size; + return(0); +} + +int os_file_modtime(char *file, unsigned long *modtime) +{ + struct uml_stat buf; + int err; + + err = os_stat_file(file, &buf); + if(err < 0){ + printk("Couldn't stat \"%s\" : err = %d\n", file, -err); + return(err); + } + + *modtime = buf.ust_mtime; + return(0); +} + +int os_get_exec_close(int fd, int* close_on_exec) +{ + int ret; + + do { + ret = fcntl(fd, F_GETFD); + } while((ret < 0) && (errno == EINTR)) ; + + if(ret < 0) + return(-errno); + + *close_on_exec = (ret&FD_CLOEXEC) ? 1 : 0; + return(ret); +} + +int os_set_exec_close(int fd, int close_on_exec) +{ + int flag, err; + + if(close_on_exec) flag = FD_CLOEXEC; + else flag = 0; + + do { + err = fcntl(fd, F_SETFD, flag); + } while((err < 0) && (errno == EINTR)) ; + + if(err < 0) + return(-errno); + return(err); +} + +int os_pipe(int *fds, int stream, int close_on_exec) +{ + int err, type = stream ? SOCK_STREAM : SOCK_DGRAM; + + err = socketpair(AF_UNIX, type, 0, fds); + if(err < 0) + return(-errno); + + if(!close_on_exec) + return(0); + + err = os_set_exec_close(fds[0], 1); + if(err < 0) + goto error; + + err = os_set_exec_close(fds[1], 1); + if(err < 0) + goto error; + + return(0); + + error: + printk("os_pipe : Setting FD_CLOEXEC failed, err = %d\n", -err); + os_close_file(fds[1]); + os_close_file(fds[0]); + return(err); +} + +int os_set_fd_async(int fd, int owner) +{ + /* XXX This should do F_GETFL first */ + if(fcntl(fd, F_SETFL, O_ASYNC | O_NONBLOCK) < 0){ + printk("os_set_fd_async : failed to set O_ASYNC and " + "O_NONBLOCK on fd # %d, errno = %d\n", fd, errno); + return(-errno); + } +#ifdef notdef + if(fcntl(fd, F_SETFD, 1) < 0){ + printk("os_set_fd_async : Setting FD_CLOEXEC failed, " + "errno = %d\n", errno); + } +#endif + + if((fcntl(fd, F_SETSIG, SIGIO) < 0) || + (fcntl(fd, F_SETOWN, owner) < 0)){ + printk("os_set_fd_async : Failed to fcntl F_SETOWN " + "(or F_SETSIG) fd %d to pid %d, errno = %d\n", fd, + owner, errno); + return(-errno); + } + + return(0); +} + +int os_clear_fd_async(int fd) +{ + int flags = fcntl(fd, F_GETFL); + + flags &= ~(O_ASYNC | O_NONBLOCK); + if(fcntl(fd, F_SETFL, flags) < 0) + return(-errno); + return(0); +} + +int os_set_fd_block(int fd, int blocking) +{ + int flags; + + flags = fcntl(fd, F_GETFL); + + if(blocking) flags &= ~O_NONBLOCK; + else flags |= O_NONBLOCK; + + if(fcntl(fd, F_SETFL, flags) < 0){ + printk("Failed to change blocking on fd # %d, errno = %d\n", + fd, errno); + return(-errno); + } + return(0); +} + +int os_accept_connection(int fd) +{ + int new; + + new = accept(fd, NULL, 0); + if(new < 0) + return(-errno); + return(new); +} + +#ifndef SHUT_RD +#define SHUT_RD 0 +#endif + +#ifndef SHUT_WR +#define SHUT_WR 1 +#endif + +#ifndef SHUT_RDWR +#define SHUT_RDWR 2 +#endif + +int os_shutdown_socket(int fd, int r, int w) +{ + int what, err; + + if(r && w) what = SHUT_RDWR; + else if(r) what = SHUT_RD; + else if(w) what = SHUT_WR; + else { + printk("os_shutdown_socket : neither r or w was set\n"); + return(-EINVAL); + } + err = shutdown(fd, what); + if(err < 0) + return(-errno); + return(0); +} + +int os_rcv_fd(int fd, int *helper_pid_out) +{ + int new, n; + char buf[CMSG_SPACE(sizeof(new))]; + struct msghdr msg; + struct cmsghdr *cmsg; + struct iovec iov; + + msg.msg_name = NULL; + msg.msg_namelen = 0; + iov = ((struct iovec) { .iov_base = helper_pid_out, + .iov_len = sizeof(*helper_pid_out) }); + msg.msg_iov = &iov; + msg.msg_iovlen = 1; + msg.msg_control = buf; + msg.msg_controllen = sizeof(buf); + msg.msg_flags = 0; + + n = recvmsg(fd, &msg, 0); + if(n < 0) + return(-errno); + + else if(n != sizeof(iov.iov_len)) + *helper_pid_out = -1; + + cmsg = CMSG_FIRSTHDR(&msg); + if(cmsg == NULL){ + printk("rcv_fd didn't receive anything, error = %d\n", errno); + return(-1); + } + if((cmsg->cmsg_level != SOL_SOCKET) || + (cmsg->cmsg_type != SCM_RIGHTS)){ + printk("rcv_fd didn't receive a descriptor\n"); + return(-1); + } + + new = ((int *) CMSG_DATA(cmsg))[0]; + return(new); +} + +int os_create_unix_socket(char *file, int len, int close_on_exec) +{ + struct sockaddr_un addr; + int sock, err; + + sock = socket(PF_UNIX, SOCK_DGRAM, 0); + if (sock < 0){ + printk("create_unix_socket - socket failed, errno = %d\n", + errno); + return(-errno); + } + + if(close_on_exec) { + err = os_set_exec_close(sock, 1); + if(err < 0) + printk("create_unix_socket : close_on_exec failed, " + "err = %d", -err); + } + + addr.sun_family = AF_UNIX; + + /* XXX Be more careful about overflow */ + snprintf(addr.sun_path, len, "%s", file); + + err = bind(sock, (struct sockaddr *) &addr, sizeof(addr)); + if (err < 0){ + printk("create_listening_socket at '%s' - bind failed, " + "errno = %d\n", file, errno); + return(-errno); + } + + return(sock); +} + +void os_flush_stdout(void) +{ + fflush(stdout); +} + +int os_lock_file(int fd, int excl) +{ + int type = excl ? F_WRLCK : F_RDLCK; + struct flock lock = ((struct flock) { .l_type = type, + .l_whence = SEEK_SET, + .l_start = 0, + .l_len = 0 } ); + int err, save; + + err = fcntl(fd, F_SETLK, &lock); + if(!err) + goto out; + + save = -errno; + err = fcntl(fd, F_GETLK, &lock); + if(err){ + err = -errno; + goto out; + } + + printk("F_SETLK failed, file already locked by pid %d\n", lock.l_pid); + err = save; + out: + return(err); +} + +/* + * Overrides for Emacs so that we follow Linus's tabbing style. + * Emacs will notice this stuff at the end of the file and automatically + * adjust the settings for this buffer only. This must remain at the end + * of the file. + * --------------------------------------------------------------------------- + * Local variables: + * c-file-style: "linux" + * End: + */ diff --git a/arch/um/os-Linux/include/file.h b/arch/um/os-Linux/include/file.h new file mode 100644 index 000000000000..d82711efacfa --- /dev/null +++ b/arch/um/os-Linux/include/file.h @@ -0,0 +1,22 @@ +/* + * Copyright (C) 2002 Jeff Dike (jdike@karaya.com) + * Licensed under the GPL + */ + +#ifndef __OS_FILE_H__ +#define __OS_FILE_H__ + +#define DEV_NULL "/dev/null" + +#endif + +/* + * Overrides for Emacs so that we follow Linus's tabbing style. + * Emacs will notice this stuff at the end of the file and automatically + * adjust the settings for this buffer only. This must remain at the end + * of the file. + * --------------------------------------------------------------------------- + * Local variables: + * c-file-style: "linux" + * End: + */ diff --git a/arch/um/os-Linux/process.c b/arch/um/os-Linux/process.c new file mode 100644 index 000000000000..ba9ca1cc790a --- /dev/null +++ b/arch/um/os-Linux/process.c @@ -0,0 +1,171 @@ +/* + * Copyright (C) 2002 Jeff Dike (jdike@addtoit.com) + * Licensed under the GPL + */ + +#include <unistd.h> +#include <stdio.h> +#include <errno.h> +#include <signal.h> +#include <linux/unistd.h> +#include <sys/mman.h> +#include <sys/wait.h> +#include "ptrace_user.h" +#include "os.h" +#include "user.h" +#include "user_util.h" + +#define ARBITRARY_ADDR -1 +#define FAILURE_PID -1 + +#define STAT_PATH_LEN sizeof("/proc/#######/stat\0") +#define COMM_SCANF "%*[^)])" + +unsigned long os_process_pc(int pid) +{ + char proc_stat[STAT_PATH_LEN], buf[256]; + unsigned long pc; + int fd, err; + + sprintf(proc_stat, "/proc/%d/stat", pid); + fd = os_open_file(proc_stat, of_read(OPENFLAGS()), 0); + if(fd < 0){ + printk("os_process_pc - couldn't open '%s', err = %d\n", + proc_stat, -fd); + return(ARBITRARY_ADDR); + } + err = os_read_file(fd, buf, sizeof(buf)); + if(err < 0){ + printk("os_process_pc - couldn't read '%s', err = %d\n", + proc_stat, -err); + os_close_file(fd); + return(ARBITRARY_ADDR); + } + os_close_file(fd); + pc = ARBITRARY_ADDR; + if(sscanf(buf, "%*d " COMM_SCANF " %*c %*d %*d %*d %*d %*d %*d %*d " + "%*d %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d " + "%*d %*d %*d %*d %*d %lu", &pc) != 1){ + printk("os_process_pc - couldn't find pc in '%s'\n", buf); + } + return(pc); +} + +int os_process_parent(int pid) +{ + char stat[STAT_PATH_LEN]; + char data[256]; + int parent, n, fd; + + if(pid == -1) return(-1); + + snprintf(stat, sizeof(stat), "/proc/%d/stat", pid); + fd = os_open_file(stat, of_read(OPENFLAGS()), 0); + if(fd < 0){ + printk("Couldn't open '%s', err = %d\n", stat, -fd); + return(FAILURE_PID); + } + + n = os_read_file(fd, data, sizeof(data)); + os_close_file(fd); + + if(n < 0){ + printk("Couldn't read '%s', err = %d\n", stat, -n); + return(FAILURE_PID); + } + + parent = FAILURE_PID; + n = sscanf(data, "%*d " COMM_SCANF " %*c %d", &parent); + if(n != 1) + printk("Failed to scan '%s'\n", data); + + return(parent); +} + +void os_stop_process(int pid) +{ + kill(pid, SIGSTOP); +} + +void os_kill_process(int pid, int reap_child) +{ + kill(pid, SIGKILL); + if(reap_child) + CATCH_EINTR(waitpid(pid, NULL, 0)); + +} + +/* Kill off a ptraced child by all means available. kill it normally first, + * then PTRACE_KILL it, then PTRACE_CONT it in case it's in a run state from + * which it can't exit directly. + */ + +void os_kill_ptraced_process(int pid, int reap_child) +{ + kill(pid, SIGKILL); + ptrace(PTRACE_KILL, pid); + ptrace(PTRACE_CONT, pid); + if(reap_child) + CATCH_EINTR(waitpid(pid, NULL, 0)); +} + +void os_usr1_process(int pid) +{ + kill(pid, SIGUSR1); +} + +/*Don't use the glibc version, which caches the result in TLS. It misses some + * syscalls, and also breaks with clone(), which does not unshare the TLS.*/ +inline _syscall0(pid_t, getpid) + +int os_getpid(void) +{ + return(getpid()); +} + +int os_map_memory(void *virt, int fd, unsigned long long off, unsigned long len, + int r, int w, int x) +{ + void *loc; + int prot; + + prot = (r ? PROT_READ : 0) | (w ? PROT_WRITE : 0) | + (x ? PROT_EXEC : 0); + + loc = mmap64((void *) virt, len, prot, MAP_SHARED | MAP_FIXED, + fd, off); + if(loc == MAP_FAILED) + return(-errno); + return(0); +} + +int os_protect_memory(void *addr, unsigned long len, int r, int w, int x) +{ + int prot = ((r ? PROT_READ : 0) | (w ? PROT_WRITE : 0) | + (x ? PROT_EXEC : 0)); + + if(mprotect(addr, len, prot) < 0) + return(-errno); + return(0); +} + +int os_unmap_memory(void *addr, int len) +{ + int err; + + err = munmap(addr, len); + if(err < 0) + return(-errno); + return(0); +} + +/* + * Overrides for Emacs so that we follow Linus's tabbing style. + * Emacs will notice this stuff at the end of the file and automatically + * adjust the settings for this buffer only. This must remain at the end + * of the file. + * --------------------------------------------------------------------------- + * Local variables: + * c-file-style: "linux" + * End: + */ diff --git a/arch/um/os-Linux/signal.c b/arch/um/os-Linux/signal.c new file mode 100644 index 000000000000..7eac1baf5975 --- /dev/null +++ b/arch/um/os-Linux/signal.c @@ -0,0 +1,48 @@ +/* + * Copyright (C) 2004 PathScale, Inc + * Licensed under the GPL + */ + +#include <signal.h> +#include "time_user.h" +#include "mode.h" +#include "sysdep/signal.h" + +void sig_handler(int sig) +{ + struct sigcontext *sc; + + ARCH_GET_SIGCONTEXT(sc, sig); + CHOOSE_MODE_PROC(sig_handler_common_tt, sig_handler_common_skas, + sig, sc); +} + +extern int timer_irq_inited; + +void alarm_handler(int sig) +{ + struct sigcontext *sc; + + ARCH_GET_SIGCONTEXT(sc, sig); + if(!timer_irq_inited) return; + + if(sig == SIGALRM) + switch_timers(0); + + CHOOSE_MODE_PROC(sig_handler_common_tt, sig_handler_common_skas, + sig, sc); + + if(sig == SIGALRM) + switch_timers(1); +} + +/* + * Overrides for Emacs so that we follow Linus's tabbing style. + * Emacs will notice this stuff at the end of the file and automatically + * adjust the settings for this buffer only. This must remain at the end + * of the file. + * --------------------------------------------------------------------------- + * Local variables: + * c-file-style: "linux" + * End: + */ diff --git a/arch/um/os-Linux/sys-i386/Makefile b/arch/um/os-Linux/sys-i386/Makefile new file mode 100644 index 000000000000..340ef26f5944 --- /dev/null +++ b/arch/um/os-Linux/sys-i386/Makefile @@ -0,0 +1,10 @@ +# +# Copyright (C) 2000 Jeff Dike (jdike@karaya.com) +# Licensed under the GPL +# + +obj-$(CONFIG_MODE_SKAS) = registers.o + +USER_OBJS := $(obj-y) + +include arch/um/scripts/Makefile.rules diff --git a/arch/um/os-Linux/sys-i386/registers.c b/arch/um/os-Linux/sys-i386/registers.c new file mode 100644 index 000000000000..148645b14480 --- /dev/null +++ b/arch/um/os-Linux/sys-i386/registers.c @@ -0,0 +1,132 @@ +/* + * Copyright (C) 2004 PathScale, Inc + * Licensed under the GPL + */ + +#include <errno.h> +#include <string.h> +#include "sysdep/ptrace_user.h" +#include "sysdep/ptrace.h" +#include "uml-config.h" +#include "skas_ptregs.h" +#include "registers.h" +#include "user.h" + +/* These are set once at boot time and not changed thereafter */ + +static unsigned long exec_regs[HOST_FRAME_SIZE]; +static unsigned long exec_fp_regs[HOST_FP_SIZE]; +static unsigned long exec_fpx_regs[HOST_XFP_SIZE]; +static int have_fpx_regs = 1; + +void init_thread_registers(union uml_pt_regs *to) +{ + memcpy(to->skas.regs, exec_regs, sizeof(to->skas.regs)); + memcpy(to->skas.fp, exec_fp_regs, sizeof(to->skas.fp)); + if(have_fpx_regs) + memcpy(to->skas.xfp, exec_fpx_regs, sizeof(to->skas.xfp)); +} + +/* XXX These need to use [GS]ETFPXREGS and copy_sc_{to,from}_user_skas needs + * to pass in a sufficiently large buffer + */ +int save_fp_registers(int pid, unsigned long *fp_regs) +{ + if(ptrace(PTRACE_GETFPREGS, pid, 0, fp_regs) < 0) + return(-errno); + return(0); +} + +int restore_fp_registers(int pid, unsigned long *fp_regs) +{ + if(ptrace(PTRACE_SETFPREGS, pid, 0, fp_regs) < 0) + return(-errno); + return(0); +} + +static int move_registers(int pid, int int_op, union uml_pt_regs *regs, + int fp_op, unsigned long *fp_regs) +{ + if(ptrace(int_op, pid, 0, regs->skas.regs) < 0) + return(-errno); + + if(ptrace(fp_op, pid, 0, fp_regs) < 0) + return(-errno); + + return(0); +} + +void save_registers(int pid, union uml_pt_regs *regs) +{ + unsigned long *fp_regs; + int err, fp_op; + + if(have_fpx_regs){ + fp_op = PTRACE_GETFPXREGS; + fp_regs = regs->skas.xfp; + } + else { + fp_op = PTRACE_GETFPREGS; + fp_regs = regs->skas.fp; + } + + err = move_registers(pid, PTRACE_GETREGS, regs, fp_op, fp_regs); + if(err) + panic("save_registers - saving registers failed, errno = %d\n", + -err); +} + +void restore_registers(int pid, union uml_pt_regs *regs) +{ + unsigned long *fp_regs; + int err, fp_op; + + if(have_fpx_regs){ + fp_op = PTRACE_SETFPXREGS; + fp_regs = regs->skas.xfp; + } + else { + fp_op = PTRACE_SETFPREGS; + fp_regs = regs->skas.fp; + } + + err = move_registers(pid, PTRACE_SETREGS, regs, fp_op, fp_regs); + if(err) + panic("restore_registers - saving registers failed, " + "errno = %d\n", -err); +} + +void init_registers(int pid) +{ + int err; + + err = ptrace(PTRACE_GETREGS, pid, 0, exec_regs); + if(err) + panic("check_ptrace : PTRACE_GETREGS failed, errno = %d", + err); + + err = ptrace(PTRACE_GETFPXREGS, pid, 0, exec_fpx_regs); + if(!err) + return; + + have_fpx_regs = 0; + if(err != EIO) + panic("check_ptrace : PTRACE_GETFPXREGS failed, errno = %d", + err); + + err = ptrace(PTRACE_GETFPREGS, pid, 0, exec_fp_regs); + if(err) + panic("check_ptrace : PTRACE_GETFPREGS failed, errno = %d", + err); +} + +/* + * Overrides for Emacs so that we follow Linus's tabbing style. + * Emacs will notice this stuff at the end of the file and automatically + * adjust the settings for this buffer only. This must remain at the end + * of the file. + * --------------------------------------------------------------------------- + * Local variables: + * c-file-style: "linux" + * End: + */ diff --git a/arch/um/os-Linux/sys-x86_64/Makefile b/arch/um/os-Linux/sys-x86_64/Makefile new file mode 100644 index 000000000000..340ef26f5944 --- /dev/null +++ b/arch/um/os-Linux/sys-x86_64/Makefile @@ -0,0 +1,10 @@ +# +# Copyright (C) 2000 Jeff Dike (jdike@karaya.com) +# Licensed under the GPL +# + +obj-$(CONFIG_MODE_SKAS) = registers.o + +USER_OBJS := $(obj-y) + +include arch/um/scripts/Makefile.rules diff --git a/arch/um/os-Linux/sys-x86_64/registers.c b/arch/um/os-Linux/sys-x86_64/registers.c new file mode 100644 index 000000000000..6286c974bbeb --- /dev/null +++ b/arch/um/os-Linux/sys-x86_64/registers.c @@ -0,0 +1,81 @@ +/* + * Copyright (C) 2004 PathScale, Inc + * Licensed under the GPL + */ + +#include <errno.h> +#include <string.h> +#include "ptrace_user.h" +#include "uml-config.h" +#include "skas_ptregs.h" +#include "registers.h" +#include "user.h" + +/* These are set once at boot time and not changed thereafter */ + +static unsigned long exec_regs[HOST_FRAME_SIZE]; +static unsigned long exec_fp_regs[HOST_FP_SIZE]; + +void init_thread_registers(union uml_pt_regs *to) +{ + memcpy(to->skas.regs, exec_regs, sizeof(to->skas.regs)); + memcpy(to->skas.fp, exec_fp_regs, sizeof(to->skas.fp)); +} + +static int move_registers(int pid, int int_op, int fp_op, + union uml_pt_regs *regs) +{ + if(ptrace(int_op, pid, 0, regs->skas.regs) < 0) + return(-errno); + + if(ptrace(fp_op, pid, 0, regs->skas.fp) < 0) + return(-errno); + + return(0); +} + +void save_registers(int pid, union uml_pt_regs *regs) +{ + int err; + + err = move_registers(pid, PTRACE_GETREGS, PTRACE_GETFPREGS, regs); + if(err) + panic("save_registers - saving registers failed, errno = %d\n", + -err); +} + +void restore_registers(int pid, union uml_pt_regs *regs) +{ + int err; + + err = move_registers(pid, PTRACE_SETREGS, PTRACE_SETFPREGS, regs); + if(err) + panic("restore_registers - saving registers failed, " + "errno = %d\n", -err); +} + +void init_registers(int pid) +{ + int err; + + err = ptrace(PTRACE_GETREGS, pid, 0, exec_regs); + if(err) + panic("check_ptrace : PTRACE_GETREGS failed, errno = %d", + err); + + err = ptrace(PTRACE_GETFPREGS, pid, 0, exec_fp_regs); + if(err) + panic("check_ptrace : PTRACE_GETFPREGS failed, errno = %d", + err); +} + +/* + * Overrides for Emacs so that we follow Linus's tabbing style. + * Emacs will notice this stuff at the end of the file and automatically + * adjust the settings for this buffer only. This must remain at the end + * of the file. + * --------------------------------------------------------------------------- + * Local variables: + * c-file-style: "linux" + * End: + */ diff --git a/arch/um/os-Linux/time.c b/arch/um/os-Linux/time.c new file mode 100644 index 000000000000..cf30a39bc484 --- /dev/null +++ b/arch/um/os-Linux/time.c @@ -0,0 +1,21 @@ +#include <stdlib.h> +#include <sys/time.h> + +unsigned long long os_usecs(void) +{ + struct timeval tv; + + gettimeofday(&tv, NULL); + return((unsigned long long) tv.tv_sec * 1000000 + tv.tv_usec); +} + +/* + * Overrides for Emacs so that we follow Linus's tabbing style. + * Emacs will notice this stuff at the end of the file and automatically + * adjust the settings for this buffer only. This must remain at the end + * of the file. + * --------------------------------------------------------------------------- + * Local variables: + * c-file-style: "linux" + * End: + */ diff --git a/arch/um/os-Linux/tty.c b/arch/um/os-Linux/tty.c new file mode 100644 index 000000000000..4cfdd18ea1ef --- /dev/null +++ b/arch/um/os-Linux/tty.c @@ -0,0 +1,61 @@ +/* + * Copyright (C) 2002 Jeff Dike (jdike@karaya.com) + * Licensed under the GPL + */ + +#include <stdlib.h> +#include <errno.h> +#include "os.h" +#include "user.h" +#include "kern_util.h" + +struct grantpt_info { + int fd; + int res; + int err; +}; + +static void grantpt_cb(void *arg) +{ + struct grantpt_info *info = arg; + + info->res = grantpt(info->fd); + info->err = errno; +} + +int get_pty(void) +{ + struct grantpt_info info; + int fd; + + fd = os_open_file("/dev/ptmx", of_rdwr(OPENFLAGS()), 0); + if(fd < 0){ + printk("get_pty : Couldn't open /dev/ptmx - err = %d\n", -fd); + return(fd); + } + + info.fd = fd; + initial_thread_cb(grantpt_cb, &info); + + if(info.res < 0){ + printk("get_pty : Couldn't grant pty - errno = %d\n", + -info.err); + return(-1); + } + if(unlockpt(fd) < 0){ + printk("get_pty : Couldn't unlock pty - errno = %d\n", errno); + return(-1); + } + return(fd); +} + +/* + * Overrides for Emacs so that we follow Linus's tabbing style. + * Emacs will notice this stuff at the end of the file and automatically + * adjust the settings for this buffer only. This must remain at the end + * of the file. + * --------------------------------------------------------------------------- + * Local variables: + * c-file-style: "linux" + * End: + */ diff --git a/arch/um/os-Linux/user_syms.c b/arch/um/os-Linux/user_syms.c new file mode 100644 index 000000000000..75d7af9ae1d2 --- /dev/null +++ b/arch/um/os-Linux/user_syms.c @@ -0,0 +1,95 @@ +#include "linux/types.h" +#include "linux/module.h" + +/* Some of this are builtin function (some are not but could in the future), + * so I *must* declare good prototypes for them and then EXPORT them. + * The kernel code uses the macro defined by include/linux/string.h, + * so I undef macros; the userspace code does not include that and I + * add an EXPORT for the glibc one.*/ + +#undef strlen +#undef strstr +#undef memcpy +#undef memset + +extern size_t strlen(const char *); +extern void *memcpy(void *, const void *, size_t); +extern void *memmove(void *, const void *, size_t); +extern void *memset(void *, int, size_t); +extern int printf(const char *, ...); + +EXPORT_SYMBOL(strlen); +EXPORT_SYMBOL(memcpy); +EXPORT_SYMBOL(memmove); +EXPORT_SYMBOL(memset); +EXPORT_SYMBOL(printf); + +EXPORT_SYMBOL(strstr); + +/* Here, instead, I can provide a fake prototype. Yes, someone cares: genksyms. + * However, the modules will use the CRC defined *here*, no matter if it is + * good; so the versions of these symbols will always match + */ +#define EXPORT_SYMBOL_PROTO(sym) \ + int sym(void); \ + EXPORT_SYMBOL(sym); + +#ifdef SUBARCH_i386 +EXPORT_SYMBOL(vsyscall_ehdr); +EXPORT_SYMBOL(vsyscall_end); +#endif + +EXPORT_SYMBOL_PROTO(__errno_location); + +EXPORT_SYMBOL_PROTO(access); +EXPORT_SYMBOL_PROTO(open); +EXPORT_SYMBOL_PROTO(open64); +EXPORT_SYMBOL_PROTO(close); +EXPORT_SYMBOL_PROTO(read); +EXPORT_SYMBOL_PROTO(write); +EXPORT_SYMBOL_PROTO(dup2); +EXPORT_SYMBOL_PROTO(__xstat); +EXPORT_SYMBOL_PROTO(__lxstat); +EXPORT_SYMBOL_PROTO(__lxstat64); +EXPORT_SYMBOL_PROTO(lseek); +EXPORT_SYMBOL_PROTO(lseek64); +EXPORT_SYMBOL_PROTO(chown); +EXPORT_SYMBOL_PROTO(truncate); +EXPORT_SYMBOL_PROTO(utime); +EXPORT_SYMBOL_PROTO(chmod); +EXPORT_SYMBOL_PROTO(rename); +EXPORT_SYMBOL_PROTO(__xmknod); + +EXPORT_SYMBOL_PROTO(symlink); +EXPORT_SYMBOL_PROTO(link); +EXPORT_SYMBOL_PROTO(unlink); +EXPORT_SYMBOL_PROTO(readlink); + +EXPORT_SYMBOL_PROTO(mkdir); +EXPORT_SYMBOL_PROTO(rmdir); +EXPORT_SYMBOL_PROTO(opendir); +EXPORT_SYMBOL_PROTO(readdir); +EXPORT_SYMBOL_PROTO(closedir); +EXPORT_SYMBOL_PROTO(seekdir); +EXPORT_SYMBOL_PROTO(telldir); + +EXPORT_SYMBOL_PROTO(ioctl); + +EXPORT_SYMBOL_PROTO(pread64); +EXPORT_SYMBOL_PROTO(pwrite64); + +EXPORT_SYMBOL_PROTO(statfs); +EXPORT_SYMBOL_PROTO(statfs64); + +EXPORT_SYMBOL_PROTO(getuid); + +/* + * Overrides for Emacs so that we follow Linus's tabbing style. + * Emacs will notice this stuff at the end of the file and automatically + * adjust the settings for this buffer only. This must remain at the end + * of the file. + * --------------------------------------------------------------------------- + * Local variables: + * c-file-style: "linux" + * End: + */ diff --git a/arch/um/os-Linux/util/Makefile b/arch/um/os-Linux/util/Makefile new file mode 100644 index 000000000000..fb00ddf969bd --- /dev/null +++ b/arch/um/os-Linux/util/Makefile @@ -0,0 +1,4 @@ +hostprogs-y := mk_user_constants +always := $(hostprogs-y) + +mk_user_constants-objs := mk_user_constants.o diff --git a/arch/um/os-Linux/util/mk_user_constants.c b/arch/um/os-Linux/util/mk_user_constants.c new file mode 100644 index 000000000000..0933518aa8bd --- /dev/null +++ b/arch/um/os-Linux/util/mk_user_constants.c @@ -0,0 +1,29 @@ +#include <stdio.h> +#include <asm/types.h> +/* For some reason, x86_64 nowhere defines u64 and u32, even though they're + * used throughout the headers. + */ +typedef __u64 u64; +typedef __u32 u32; +#include <asm/user.h> + +int main(int argc, char **argv) +{ + printf("/*\n"); + printf(" * Generated by mk_user_constants\n"); + printf(" */\n"); + printf("\n"); + printf("#ifndef __UM_USER_CONSTANTS_H\n"); + printf("#define __UM_USER_CONSTANTS_H\n"); + printf("\n"); + /* I'd like to use FRAME_SIZE from ptrace.h here, but that's wrong on + * x86_64 (216 vs 168 bytes). user_regs_struct is the correct size on + * both x86_64 and i386. + */ + printf("#define UM_FRAME_SIZE %d\n", (int) sizeof(struct user_regs_struct)); + + printf("\n"); + printf("#endif\n"); + + return(0); +} |