diff options
Diffstat (limited to 'ipc/util.h')
| -rw-r--r-- | ipc/util.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/ipc/util.h b/ipc/util.h index 51853dc2f340..acc5159e96d0 100644 --- a/ipc/util.h +++ b/ipc/util.h @@ -15,6 +15,7 @@ #include <linux/err.h> #include <linux/ipc_namespace.h> +#define IPCMNI 32768 /* <= MAX_INT limit for ipc arrays (including sysctl changes) */ #define SEQ_MULTIPLIER (IPCMNI) int sem_init(void); @@ -22,6 +23,7 @@ int msg_init(void); void shm_init(void); struct ipc_namespace; +struct pid_namespace; #ifdef CONFIG_POSIX_MQUEUE extern void mq_clear_sbinfo(struct ipc_namespace *ns); @@ -85,6 +87,7 @@ int ipc_init_ids(struct ipc_ids *); #ifdef CONFIG_PROC_FS void __init ipc_init_proc_interface(const char *path, const char *header, int ids, int (*show)(struct seq_file *, void *)); +struct pid_namespace *ipc_seq_pid_ns(struct seq_file *); #else #define ipc_init_proc_interface(path, header, ids, show) do {} while (0) #endif @@ -149,6 +152,15 @@ struct kern_ipc_perm *ipcctl_pre_down_nolock(struct ipc_namespace *ns, struct ipc_ids *ids, int id, int cmd, struct ipc64_perm *perm, int extra_perm); +static inline void ipc_update_pid(struct pid **pos, struct pid *pid) +{ + struct pid *old = *pos; + if (old != pid) { + *pos = get_pid(pid); + put_pid(old); + } +} + #ifndef CONFIG_ARCH_WANT_IPC_PARSE_VERSION /* On IA-64, we always use the "64-bit version" of the IPC structures. */ # define ipc_parse_version(cmd) IPC_64 |