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-rw-r--r--fs/proc/base.c47
-rw-r--r--fs/proc/fd.c8
-rw-r--r--fs/proc/fd.h2
-rw-r--r--fs/proc/generic.c2
-rw-r--r--fs/proc/internal.h2
-rw-r--r--fs/proc/proc_sysctl.c2
6 files changed, 35 insertions, 28 deletions
diff --git a/fs/proc/base.c b/fs/proc/base.c
index dc7fe5f3a53c..29fd7ef97be9 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -400,23 +400,6 @@ static const struct file_operations proc_pid_cmdline_ops = {
.llseek = generic_file_llseek,
};
-static int proc_pid_auxv(struct seq_file *m, struct pid_namespace *ns,
- struct pid *pid, struct task_struct *task)
-{
- struct mm_struct *mm = mm_access(task, PTRACE_MODE_READ_FSCREDS);
- if (mm && !IS_ERR(mm)) {
- unsigned int nwords = 0;
- do {
- nwords += 2;
- } while (mm->saved_auxv[nwords - 2] != 0); /* AT_NULL */
- seq_write(m, mm->saved_auxv, nwords * sizeof(mm->saved_auxv[0]));
- mmput(mm);
- return 0;
- } else
- return PTR_ERR(mm);
-}
-
-
#ifdef CONFIG_KALLSYMS
/*
* Provides a wchan file via kallsyms in a proper one-value-per-file format.
@@ -709,7 +692,7 @@ int proc_setattr(struct dentry *dentry, struct iattr *attr)
if (attr->ia_valid & ATTR_MODE)
return -EPERM;
- error = inode_change_ok(inode, attr);
+ error = setattr_prepare(dentry, attr);
if (error)
return error;
@@ -1014,6 +997,30 @@ static const struct file_operations proc_environ_operations = {
.release = mem_release,
};
+static int auxv_open(struct inode *inode, struct file *file)
+{
+ return __mem_open(inode, file, PTRACE_MODE_READ_FSCREDS);
+}
+
+static ssize_t auxv_read(struct file *file, char __user *buf,
+ size_t count, loff_t *ppos)
+{
+ struct mm_struct *mm = file->private_data;
+ unsigned int nwords = 0;
+ do {
+ nwords += 2;
+ } while (mm->saved_auxv[nwords - 2] != 0); /* AT_NULL */
+ return simple_read_from_buffer(buf, count, ppos, mm->saved_auxv,
+ nwords * sizeof(mm->saved_auxv[0]));
+}
+
+static const struct file_operations proc_auxv_operations = {
+ .open = auxv_open,
+ .read = auxv_read,
+ .llseek = generic_file_llseek,
+ .release = mem_release,
+};
+
static ssize_t oom_adj_read(struct file *file, char __user *buf, size_t count,
loff_t *ppos)
{
@@ -2842,7 +2849,7 @@ static const struct pid_entry tgid_base_stuff[] = {
DIR("net", S_IRUGO|S_IXUGO, proc_net_inode_operations, proc_net_operations),
#endif
REG("environ", S_IRUSR, proc_environ_operations),
- ONE("auxv", S_IRUSR, proc_pid_auxv),
+ REG("auxv", S_IRUSR, proc_auxv_operations),
ONE("status", S_IRUGO, proc_pid_status),
ONE("personality", S_IRUSR, proc_pid_personality),
ONE("limits", S_IRUGO, proc_pid_limits),
@@ -3230,7 +3237,7 @@ static const struct pid_entry tid_base_stuff[] = {
DIR("net", S_IRUGO|S_IXUGO, proc_net_inode_operations, proc_net_operations),
#endif
REG("environ", S_IRUSR, proc_environ_operations),
- ONE("auxv", S_IRUSR, proc_pid_auxv),
+ REG("auxv", S_IRUSR, proc_auxv_operations),
ONE("status", S_IRUGO, proc_pid_status),
ONE("personality", S_IRUSR, proc_pid_personality),
ONE("limits", S_IRUGO, proc_pid_limits),
diff --git a/fs/proc/fd.c b/fs/proc/fd.c
index 01df23cc81f6..d21dafef3102 100644
--- a/fs/proc/fd.c
+++ b/fs/proc/fd.c
@@ -31,7 +31,7 @@ static int seq_show(struct seq_file *m, void *v)
put_task_struct(task);
if (files) {
- int fd = proc_fd(m->private);
+ unsigned int fd = proc_fd(m->private);
spin_lock(&files->file_lock);
file = fcheck_files(files, fd);
@@ -86,7 +86,7 @@ static int tid_fd_revalidate(struct dentry *dentry, unsigned int flags)
struct task_struct *task;
const struct cred *cred;
struct inode *inode;
- int fd;
+ unsigned int fd;
if (flags & LOOKUP_RCU)
return -ECHILD;
@@ -158,7 +158,7 @@ static int proc_fd_link(struct dentry *dentry, struct path *path)
}
if (files) {
- int fd = proc_fd(d_inode(dentry));
+ unsigned int fd = proc_fd(d_inode(dentry));
struct file *fd_file;
spin_lock(&files->file_lock);
@@ -253,7 +253,7 @@ static int proc_readfd_common(struct file *file, struct dir_context *ctx,
continue;
rcu_read_unlock();
- len = snprintf(name, sizeof(name), "%d", fd);
+ len = snprintf(name, sizeof(name), "%u", fd);
if (!proc_fill_cache(file, ctx,
name, len, instantiate, p,
(void *)(unsigned long)fd))
diff --git a/fs/proc/fd.h b/fs/proc/fd.h
index 7c047f256ae2..46dafadd0083 100644
--- a/fs/proc/fd.h
+++ b/fs/proc/fd.h
@@ -11,7 +11,7 @@ extern const struct inode_operations proc_fdinfo_inode_operations;
extern int proc_fd_permission(struct inode *inode, int mask);
-static inline int proc_fd(struct inode *inode)
+static inline unsigned int proc_fd(struct inode *inode)
{
return PROC_I(inode)->fd;
}
diff --git a/fs/proc/generic.c b/fs/proc/generic.c
index bca66d83a765..5f2dc2032c79 100644
--- a/fs/proc/generic.c
+++ b/fs/proc/generic.c
@@ -105,7 +105,7 @@ static int proc_notify_change(struct dentry *dentry, struct iattr *iattr)
struct proc_dir_entry *de = PDE(inode);
int error;
- error = inode_change_ok(inode, iattr);
+ error = setattr_prepare(dentry, iattr);
if (error)
return error;
diff --git a/fs/proc/internal.h b/fs/proc/internal.h
index 7931c558c192..5378441ec1b7 100644
--- a/fs/proc/internal.h
+++ b/fs/proc/internal.h
@@ -60,7 +60,7 @@ union proc_op {
struct proc_inode {
struct pid *pid;
- int fd;
+ unsigned int fd;
union proc_op op;
struct proc_dir_entry *pde;
struct ctl_table_header *sysctl;
diff --git a/fs/proc/proc_sysctl.c b/fs/proc/proc_sysctl.c
index 71025b9e2a4e..f908b78bce55 100644
--- a/fs/proc/proc_sysctl.c
+++ b/fs/proc/proc_sysctl.c
@@ -759,7 +759,7 @@ static int proc_sys_setattr(struct dentry *dentry, struct iattr *attr)
if (attr->ia_valid & (ATTR_MODE | ATTR_UID | ATTR_GID))
return -EPERM;
- error = inode_change_ok(inode, attr);
+ error = setattr_prepare(dentry, attr);
if (error)
return error;
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-25 22:47:39 +0000