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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

86
ipc/shm.c
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@@ -23,12 +23,12 @@
#include <linux/init.h>
#include <linux/file.h>
#include <linux/mman.h>
#include <linux/proc_fs.h>
#include <linux/shmem_fs.h>
#include <linux/security.h>
#include <linux/syscalls.h>
#include <linux/audit.h>
#include <linux/ptrace.h>
#include <linux/seq_file.h>
#include <asm/uaccess.h>
@@ -51,7 +51,7 @@ static int newseg (key_t key, int shmflg, size_t size);
static void shm_open (struct vm_area_struct *shmd);
static void shm_close (struct vm_area_struct *shmd);
#ifdef CONFIG_PROC_FS
static int sysvipc_shm_read_proc(char *buffer, char **start, off_t offset, int length, int *eof, void *data);
static int sysvipc_shm_proc_show(struct seq_file *s, void *it);
#endif
size_t shm_ctlmax = SHMMAX;
@@ -63,9 +63,10 @@ static int shm_tot; /* total number of shared memory pages */
void __init shm_init (void)
{
ipc_init_ids(&shm_ids, 1);
#ifdef CONFIG_PROC_FS
create_proc_read_entry("sysvipc/shm", 0, NULL, sysvipc_shm_read_proc, NULL);
#endif
ipc_init_proc_interface("sysvipc/shm",
" key shmid perms size cpid lpid nattch uid gid cuid cgid atime dtime ctime\n",
&shm_ids,
sysvipc_shm_proc_show);
}
static inline int shm_checkid(struct shmid_kernel *s, int id)
@@ -869,63 +870,32 @@ asmlinkage long sys_shmdt(char __user *shmaddr)
}
#ifdef CONFIG_PROC_FS
static int sysvipc_shm_read_proc(char *buffer, char **start, off_t offset, int length, int *eof, void *data)
static int sysvipc_shm_proc_show(struct seq_file *s, void *it)
{
off_t pos = 0;
off_t begin = 0;
int i, len = 0;
struct shmid_kernel *shp = it;
char *format;
down(&shm_ids.sem);
len += sprintf(buffer, " key shmid perms size cpid lpid nattch uid gid cuid cgid atime dtime ctime\n");
for(i = 0; i <= shm_ids.max_id; i++) {
struct shmid_kernel* shp;
shp = shm_lock(i);
if(shp!=NULL) {
#define SMALL_STRING "%10d %10d %4o %10u %5u %5u %5d %5u %5u %5u %5u %10lu %10lu %10lu\n"
#define BIG_STRING "%10d %10d %4o %21u %5u %5u %5d %5u %5u %5u %5u %10lu %10lu %10lu\n"
char *format;
if (sizeof(size_t) <= sizeof(int))
format = SMALL_STRING;
else
format = BIG_STRING;
len += sprintf(buffer + len, format,
shp->shm_perm.key,
shm_buildid(i, shp->shm_perm.seq),
shp->shm_flags,
shp->shm_segsz,
shp->shm_cprid,
shp->shm_lprid,
is_file_hugepages(shp->shm_file) ? (file_count(shp->shm_file) - 1) : shp->shm_nattch,
shp->shm_perm.uid,
shp->shm_perm.gid,
shp->shm_perm.cuid,
shp->shm_perm.cgid,
shp->shm_atim,
shp->shm_dtim,
shp->shm_ctim);
shm_unlock(shp);
pos += len;
if(pos < offset) {
len = 0;
begin = pos;
}
if(pos > offset + length)
goto done;
}
}
*eof = 1;
done:
up(&shm_ids.sem);
*start = buffer + (offset - begin);
len -= (offset - begin);
if(len > length)
len = length;
if(len < 0)
len = 0;
return len;
if (sizeof(size_t) <= sizeof(int))
format = SMALL_STRING;
else
format = BIG_STRING;
return seq_printf(s, format,
shp->shm_perm.key,
shp->id,
shp->shm_flags,
shp->shm_segsz,
shp->shm_cprid,
shp->shm_lprid,
is_file_hugepages(shp->shm_file) ? (file_count(shp->shm_file) - 1) : shp->shm_nattch,
shp->shm_perm.uid,
shp->shm_perm.gid,
shp->shm_perm.cuid,
shp->shm_perm.cgid,
shp->shm_atim,
shp->shm_dtim,
shp->shm_ctim);
}
#endif