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linprocfs: Add support for proc/sysvipc/{msg,sem,shm}

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Reviewed by: imp,kib
Pull Request: https://github.com/freebsd/freebsd-src/pull/1232
This commit is contained in:
Ricardo Branco 2024-05-12 22:26:15 +02:00 committed by Warner Losh
parent cbcb9778dd
commit 25a04527b7
1 changed files with 137 additions and 0 deletions
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137
sys/compat/linprocfs/linprocfs.c
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@ -2092,6 +2092,134 @@ linprocfs_domax_map_cnt(PFS_FILL_ARGS)
return (0);
}
/*
* Filler function for proc/sysvipc/msg
*/
static int
linprocfs_dosysvipc_msg(PFS_FILL_ARGS)
{
struct msqid_kernel *msqids;
size_t id, size;
int error;
sbuf_printf(sb,
"%10s %10s %4s %10s %10s %5s %5s %5s %5s %5s %5s %10s %10s %10s\n",
"key", "msqid", "perms", "cbytes", "qnum", "lspid", "lrpid",
"uid", "gid", "cuid", "cgid", "stime", "rtime", "ctime");
error = kern_get_msqids(curthread, &msqids, &size);
if (error != 0)
return (error);
for (id = 0; id < size; id++) {
if (msqids[id].u.msg_qbytes == 0)
continue;
sbuf_printf(sb,
"%10d %10lu %4o %10lu %10lu %5u %5u %5u %5u %5u %5u %jd %jd %jd\n",
(int)msqids[id].u.msg_perm.key,
IXSEQ_TO_IPCID(id, msqids[id].u.msg_perm),
msqids[id].u.msg_perm.mode,
msqids[id].u.msg_cbytes,
msqids[id].u.msg_qnum,
msqids[id].u.msg_lspid,
msqids[id].u.msg_lrpid,
msqids[id].u.msg_perm.uid,
msqids[id].u.msg_perm.gid,
msqids[id].u.msg_perm.cuid,
msqids[id].u.msg_perm.cgid,
(intmax_t)msqids[id].u.msg_stime,
(intmax_t)msqids[id].u.msg_rtime,
(intmax_t)msqids[id].u.msg_ctime);
}
free(msqids, M_TEMP);
return (0);
}
/*
* Filler function for proc/sysvipc/sem
*/
static int
linprocfs_dosysvipc_sem(PFS_FILL_ARGS)
{
struct semid_kernel *semids;
size_t id, size;
int error;
sbuf_printf(sb, "%10s %10s %4s %10s %5s %5s %5s %5s %10s %10s\n",
"key", "semid", "perms", "nsems", "uid", "gid", "cuid", "cgid",
"otime", "ctime");
error = kern_get_sema(curthread, &semids, &size);
if (error != 0)
return (error);
for (id = 0; id < size; id++) {
if ((semids[id].u.sem_perm.mode & SEM_ALLOC) == 0)
continue;
sbuf_printf(sb,
"%10d %10lu %4o %10u %5u %5u %5u %5u %jd %jd\n",
(int)semids[id].u.sem_perm.key,
IXSEQ_TO_IPCID(id, semids[id].u.sem_perm),
semids[id].u.sem_perm.mode,
semids[id].u.sem_nsems,
semids[id].u.sem_perm.uid,
semids[id].u.sem_perm.gid,
semids[id].u.sem_perm.cuid,
semids[id].u.sem_perm.cgid,
(intmax_t)semids[id].u.sem_otime,
(intmax_t)semids[id].u.sem_ctime);
}
free(semids, M_TEMP);
return (0);
}
/*
* Filler function for proc/sysvipc/shm
*/
static int
linprocfs_dosysvipc_shm(PFS_FILL_ARGS)
{
struct shmid_kernel *shmids;
size_t id, size;
int error;
sbuf_printf(sb,
"%10s %10s %s %21s %5s %5s %5s %5s %5s %5s %5s %10s %10s %10s %21s %21s\n",
"key", "shmid", "perms", "size", "cpid", "lpid", "nattch", "uid",
"gid", "cuid", "cgid", "atime", "dtime", "ctime", "rss", "swap");
error = kern_get_shmsegs(curthread, &shmids, &size);
if (error != 0)
return (error);
for (id = 0; id < size; id++) {
if ((shmids[id].u.shm_perm.mode & SHMSEG_ALLOCATED) == 0)
continue;
sbuf_printf(sb,
"%10d %10lu %4o %21zu %5u %5u %5u %5u %5u %5u %5u %jd %jd %jd %21d %21d\n",
(int)shmids[id].u.shm_perm.key,
IXSEQ_TO_IPCID(id, shmids[id].u.shm_perm),
shmids[id].u.shm_perm.mode,
shmids[id].u.shm_segsz,
shmids[id].u.shm_cpid,
shmids[id].u.shm_lpid,
shmids[id].u.shm_nattch,
shmids[id].u.shm_perm.uid,
shmids[id].u.shm_perm.gid,
shmids[id].u.shm_perm.cuid,
shmids[id].u.shm_perm.cgid,
(intmax_t)shmids[id].u.shm_atime,
(intmax_t)shmids[id].u.shm_dtime,
(intmax_t)shmids[id].u.shm_ctime,
0, 0); /* XXX rss & swp are not supported */
}
free(shmids, M_TEMP);
return (0);
}
/*
* Constructor
*/
@ -2241,6 +2369,15 @@ linprocfs_init(PFS_INIT_ARGS)
pfs_create_file(dir, "max_map_count", &linprocfs_domax_map_cnt,
NULL, NULL, NULL, PFS_RD);
/* /proc/sysvipc/... */
dir = pfs_create_dir(root, "sysvipc", NULL, NULL, NULL, 0);
pfs_create_file(dir, "msg", &linprocfs_dosysvipc_msg,
NULL, NULL, NULL, PFS_RD);
pfs_create_file(dir, "sem", &linprocfs_dosysvipc_sem,
NULL, NULL, NULL, PFS_RD);
pfs_create_file(dir, "shm", &linprocfs_dosysvipc_shm,
NULL, NULL, NULL, PFS_RD);
return (0);
}