[PATCH] ipc: convert /proc/sysvipc/* to generic seq_file interface
Change the /proc/sysvipc/shm|sem|msg files to use the generic seq_file
implementation for struct ipc_ids.
Signed-off-by: Mike Waychison <mikew@google.com>
Cc: Manfred Spraul <manfred@colorfullife.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/ipc/msg.c b/ipc/msg.c
index 27e516f..d035bd2 100644
--- a/ipc/msg.c
+++ b/ipc/msg.c
@@ -26,6 +26,7 @@
#include <linux/sched.h>
#include <linux/syscalls.h>
#include <linux/audit.h>
+#include <linux/seq_file.h>
#include <asm/current.h>
#include <asm/uaccess.h>
#include "util.h"
@@ -74,16 +75,16 @@
static void freeque (struct msg_queue *msq, int id);
static int newque (key_t key, int msgflg);
#ifdef CONFIG_PROC_FS
-static int sysvipc_msg_read_proc(char *buffer, char **start, off_t offset, int length, int *eof, void *data);
+static int sysvipc_msg_proc_show(struct seq_file *s, void *it);
#endif
void __init msg_init (void)
{
ipc_init_ids(&msg_ids,msg_ctlmni);
-
-#ifdef CONFIG_PROC_FS
- create_proc_read_entry("sysvipc/msg", 0, NULL, sysvipc_msg_read_proc, NULL);
-#endif
+ ipc_init_proc_interface("sysvipc/msg",
+ " key msqid perms cbytes qnum lspid lrpid uid gid cuid cgid stime rtime ctime\n",
+ &msg_ids,
+ sysvipc_msg_proc_show);
}
static int newque (key_t key, int msgflg)
@@ -113,6 +114,7 @@
return -ENOSPC;
}
+ msq->q_id = msg_buildid(id,msq->q_perm.seq);
msq->q_stime = msq->q_rtime = 0;
msq->q_ctime = get_seconds();
msq->q_cbytes = msq->q_qnum = 0;
@@ -123,7 +125,7 @@
INIT_LIST_HEAD(&msq->q_senders);
msg_unlock(msq);
- return msg_buildid(id,msq->q_perm.seq);
+ return msq->q_id;
}
static inline void ss_add(struct msg_queue* msq, struct msg_sender* mss)
@@ -808,55 +810,25 @@
}
#ifdef CONFIG_PROC_FS
-static int sysvipc_msg_read_proc(char *buffer, char **start, off_t offset, int length, int *eof, void *data)
+static int sysvipc_msg_proc_show(struct seq_file *s, void *it)
{
- off_t pos = 0;
- off_t begin = 0;
- int i, len = 0;
+ struct msg_queue *msq = it;
- down(&msg_ids.sem);
- len += sprintf(buffer, " key msqid perms cbytes qnum lspid lrpid uid gid cuid cgid stime rtime ctime\n");
-
- for(i = 0; i <= msg_ids.max_id; i++) {
- struct msg_queue * msq;
- msq = msg_lock(i);
- if(msq != NULL) {
- len += sprintf(buffer + len, "%10d %10d %4o %10lu %10lu %5u %5u %5u %5u %5u %5u %10lu %10lu %10lu\n",
- msq->q_perm.key,
- msg_buildid(i,msq->q_perm.seq),
- msq->q_perm.mode,
- msq->q_cbytes,
- msq->q_qnum,
- msq->q_lspid,
- msq->q_lrpid,
- msq->q_perm.uid,
- msq->q_perm.gid,
- msq->q_perm.cuid,
- msq->q_perm.cgid,
- msq->q_stime,
- msq->q_rtime,
- msq->q_ctime);
- msg_unlock(msq);
-
- pos += len;
- if(pos < offset) {
- len = 0;
- begin = pos;
- }
- if(pos > offset + length)
- goto done;
- }
-
- }
- *eof = 1;
-done:
- up(&msg_ids.sem);
- *start = buffer + (offset - begin);
- len -= (offset - begin);
- if(len > length)
- len = length;
- if(len < 0)
- len = 0;
- return len;
+ return seq_printf(s,
+ "%10d %10d %4o %10lu %10lu %5u %5u %5u %5u %5u %5u %10lu %10lu %10lu\n",
+ msq->q_perm.key,
+ msq->q_id,
+ msq->q_perm.mode,
+ msq->q_cbytes,
+ msq->q_qnum,
+ msq->q_lspid,
+ msq->q_lrpid,
+ msq->q_perm.uid,
+ msq->q_perm.gid,
+ msq->q_perm.cuid,
+ msq->q_perm.cgid,
+ msq->q_stime,
+ msq->q_rtime,
+ msq->q_ctime);
}
#endif
