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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2017-09-14 17:37:26 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-09-14 17:37:26 -0700 |
| commit | cc73fee0bae2d66594d1fa2df92bbd783aa98e04 (patch) | |
| tree | d1e7fe7f76cae4cbc941fc3bb43a46d237a9df77 /ipc/util.h | |
| parent | e7cdb60fd28b252f1c15a0e50f79a01906124915 (diff) | |
| parent | aaed2dd8a31359e5767ee099ecbb078d55be4d29 (diff) | |
Merge branch 'work.ipc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull ipc compat cleanup and 64-bit time_t from Al Viro:
"IPC copyin/copyout sanitizing, including 64bit time_t work from Deepa
Dinamani"
* 'work.ipc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
utimes: Make utimes y2038 safe
ipc: shm: Make shmid_kernel timestamps y2038 safe
ipc: sem: Make sem_array timestamps y2038 safe
ipc: msg: Make msg_queue timestamps y2038 safe
ipc: mqueue: Replace timespec with timespec64
ipc: Make sys_semtimedop() y2038 safe
get rid of SYSVIPC_COMPAT on ia64
semtimedop(): move compat to native
shmat(2): move compat to native
msgrcv(2), msgsnd(2): move compat to native
ipc(2): move compat to native
ipc: make use of compat ipc_perm helpers
semctl(): move compat to native
semctl(): separate all layout-dependent copyin/copyout
msgctl(): move compat to native
msgctl(): split the actual work from copyin/copyout
ipc: move compat shmctl to native
shmctl: split the work from copyin/copyout
Diffstat (limited to 'ipc/util.h')
| -rw-r--r-- | ipc/util.h | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/ipc/util.h b/ipc/util.h index 80c9f51c3f07..b21297bc11eb 100644 --- a/ipc/util.h +++ b/ipc/util.h @@ -194,4 +194,34 @@ int ipcget(struct ipc_namespace *ns, struct ipc_ids *ids, const struct ipc_ops *ops, struct ipc_params *params); void free_ipcs(struct ipc_namespace *ns, struct ipc_ids *ids, void (*free)(struct ipc_namespace *, struct kern_ipc_perm *)); + +#ifdef CONFIG_COMPAT +#include <linux/compat.h> +struct compat_ipc_perm { + key_t key; + __compat_uid_t uid; + __compat_gid_t gid; + __compat_uid_t cuid; + __compat_gid_t cgid; + compat_mode_t mode; + unsigned short seq; +}; + +void to_compat_ipc_perm(struct compat_ipc_perm *, struct ipc64_perm *); +void to_compat_ipc64_perm(struct compat_ipc64_perm *, struct ipc64_perm *); +int get_compat_ipc_perm(struct ipc64_perm *, struct compat_ipc_perm __user *); +int get_compat_ipc64_perm(struct ipc64_perm *, + struct compat_ipc64_perm __user *); + +static inline int compat_ipc_parse_version(int *cmd) +{ +#ifdef CONFIG_ARCH_WANT_COMPAT_IPC_PARSE_VERSION + int version = *cmd & IPC_64; + *cmd &= ~IPC_64; + return version; +#else + return IPC_64; +#endif +} +#endif #endif |