Commit b30efe27 authored by Stanislav Kinsbursky's avatar Stanislav Kinsbursky Committed by Linus Torvalds

ipc: convert prepare_copy() from macro to function

This code works if CONFIG_CHECKPOINT_RESTORE is disabled.

[akpm@linux-foundation.org: remove __maybe_unused]
Signed-off-by: default avatarStanislav Kinsbursky <skinsbursky@parallels.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: James Morris <jmorris@namei.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 85398aa8
...@@ -803,8 +803,15 @@ static inline void free_copy(struct msg_msg *copy) ...@@ -803,8 +803,15 @@ static inline void free_copy(struct msg_msg *copy)
free_msg(copy); free_msg(copy);
} }
#else #else
#define prepare_copy(buf, sz, msgflg, msgtyp, copy_nr) ERR_PTR(-ENOSYS)
#define fill_copy(copy_nr, msg_nr, msg, copy) NULL #define fill_copy(copy_nr, msg_nr, msg, copy) NULL
static inline struct msg_msg *prepare_copy(void __user *buf, size_t bufsz,
int msgflg, long *msgtyp,
unsigned long *copy_number)
{
return ERR_PTR(-ENOSYS);
}
static inline void free_copy(struct msg_msg *copy) static inline void free_copy(struct msg_msg *copy)
{ {
} }
...@@ -819,7 +826,7 @@ long do_msgrcv(int msqid, void __user *buf, size_t bufsz, long msgtyp, ...@@ -819,7 +826,7 @@ long do_msgrcv(int msqid, void __user *buf, size_t bufsz, long msgtyp,
int mode; int mode;
struct ipc_namespace *ns; struct ipc_namespace *ns;
struct msg_msg *copy = NULL; struct msg_msg *copy = NULL;
unsigned long __maybe_unused copy_number; unsigned long copy_number = 0;
if (msqid < 0 || (long) bufsz < 0) if (msqid < 0 || (long) bufsz < 0)
return -EINVAL; return -EINVAL;
......
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