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[PATCH] ipc: convert /proc/sysvipc/* to generic seq_file interface

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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>
This commit is contained in:
Mike Waychison
2005-09-06 15:17:10 -07:00
committed by Linus Torvalds
parent ae7817745e
commit 19b4946ca9
5 changed files with 78 additions and 161 deletions
Download Patch File Download Diff File Expand all files Collapse all files

71
ipc/sem.c
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@@ -73,6 +73,7 @@
#include <linux/security.h>
#include <linux/syscalls.h>
#include <linux/audit.h>
#include <linux/seq_file.h>
#include <asm/uaccess.h>
#include "util.h"
@@ -89,7 +90,7 @@ static struct ipc_ids sem_ids;
static int newary (key_t, int, int);
static void freeary (struct sem_array *sma, int id);
#ifdef CONFIG_PROC_FS
static int sysvipc_sem_read_proc(char *buffer, char **start, off_t offset, int length, int *eof, void *data);
static int sysvipc_sem_proc_show(struct seq_file *s, void *it);
#endif
#define SEMMSL_FAST 256 /* 512 bytes on stack */
@@ -116,10 +117,10 @@ void __init sem_init (void)
{
used_sems = 0;
ipc_init_ids(&sem_ids,sc_semmni);
#ifdef CONFIG_PROC_FS
create_proc_read_entry("sysvipc/sem", 0, NULL, sysvipc_sem_read_proc, NULL);
#endif
ipc_init_proc_interface("sysvipc/sem",
" key semid perms nsems uid gid cuid cgid otime ctime\n",
&sem_ids,
sysvipc_sem_proc_show);
}
/*
@@ -193,6 +194,7 @@ static int newary (key_t key, int nsems, int semflg)
}
used_sems += nsems;
sma->sem_id = sem_buildid(id, sma->sem_perm.seq);
sma->sem_base = (struct sem *) &sma[1];
/* sma->sem_pending = NULL; */
sma->sem_pending_last = &sma->sem_pending;
@@ -201,7 +203,7 @@ static int newary (key_t key, int nsems, int semflg)
sma->sem_ctime = get_seconds();
sem_unlock(sma);
return sem_buildid(id, sma->sem_perm.seq);
return sma->sem_id;
}
asmlinkage long sys_semget (key_t key, int nsems, int semflg)
@@ -1328,50 +1330,21 @@ next_entry:
}
#ifdef CONFIG_PROC_FS
static int sysvipc_sem_read_proc(char *buffer, char **start, off_t offset, int length, int *eof, void *data)
static int sysvipc_sem_proc_show(struct seq_file *s, void *it)
{
off_t pos = 0;
off_t begin = 0;
int i, len = 0;
struct sem_array *sma = it;
len += sprintf(buffer, " key semid perms nsems uid gid cuid cgid otime ctime\n");
down(&sem_ids.sem);
for(i = 0; i <= sem_ids.max_id; i++) {
struct sem_array *sma;
sma = sem_lock(i);
if(sma) {
len += sprintf(buffer + len, "%10d %10d %4o %10lu %5u %5u %5u %5u %10lu %10lu\n",
sma->sem_perm.key,
sem_buildid(i,sma->sem_perm.seq),
sma->sem_perm.mode,
sma->sem_nsems,
sma->sem_perm.uid,
sma->sem_perm.gid,
sma->sem_perm.cuid,
sma->sem_perm.cgid,
sma->sem_otime,
sma->sem_ctime);
sem_unlock(sma);
pos += len;
if(pos < offset) {
len = 0;
begin = pos;
}
if(pos > offset + length)
goto done;
}
}
*eof = 1;
done:
up(&sem_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 %5u %5u %5u %5u %10lu %10lu\n",
sma->sem_perm.key,
sma->sem_id,
sma->sem_perm.mode,
sma->sem_nsems,
sma->sem_perm.uid,
sma->sem_perm.gid,
sma->sem_perm.cuid,
sma->sem_perm.cgid,
sma->sem_otime,
sma->sem_ctime);
}
#endif