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MFP4: Change 109654

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Add two linprocfs entries for Linux IPC:

	/proc/sys/kernel/msgmni	->	kern.ipc.msgmni
	/proc/sys/kernel/sem	->	kern.ipc.semmsl
					kern.ipc.semmns
					kern.ipc.semopm
					kern.ipc.semmni

This fixes msgget03 and semget05 from Linux Test Project (LTP) test suite.
msgctl08 and msgctl09 also use /proc/sys/kernel/msgmni but another fix is
required from p4 (Change 110179).

Requested by:	netchild
This commit is contained in:
Jung-uk Kim 2006-11-27 21:10:55 +00:00
parent 75ba43386e
commit e40fc50b9f
1 changed files with 60 additions and 0 deletions
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60
sys/compat/linprocfs/linprocfs.c
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@ -924,6 +924,24 @@ linprocfs_donetdev(PFS_FILL_ARGS)
return (0);
}
/*
* Filler function for proc/sys/kernel/msgmni
*/
static int
linprocfs_domsgmni(PFS_FILL_ARGS)
{
int msgmni;
size_t size;
size = sizeof(msgmni);
if (kernel_sysctlbyname(td, "kern.ipc.msgmni", &msgmni, &size,
0, 0, 0, 0) != 0)
msgmni = 0;
sbuf_printf(sb, "%i\n", msgmni);
return (0);
}
/*
* Filler function for proc/sys/kernel/pid_max
*/
@ -936,6 +954,44 @@ linprocfs_dopid_max(PFS_FILL_ARGS)
return (0);
}
/*
* Filler function for proc/sys/kernel/sem
*/
static int
linprocfs_dosem(PFS_FILL_ARGS)
{
int semmsl, semmns, semopm, semmni;
size_t size;
/* Field 1: SEMMSL */
size = sizeof(semmsl);
if (kernel_sysctlbyname(td, "kern.ipc.semmsl", &semmsl, &size,
0, 0, 0, 0) != 0)
semmsl = 0;
/* Field 2: SEMMNS */
size = sizeof(semmns);
if (kernel_sysctlbyname(td, "kern.ipc.semmns", &semmns, &size,
0, 0, 0, 0) != 0)
semmns = 0;
/* Field 3: SEMOPM */
size = sizeof(semopm);
if (kernel_sysctlbyname(td, "kern.ipc.semopm", &semopm, &size,
0, 0, 0, 0) != 0)
semopm = 0;
/* Field 4: SEMMNI */
size = sizeof(semmni);
if (kernel_sysctlbyname(td, "kern.ipc.semmni", &semmni, &size,
0, 0, 0, 0) != 0)
semmni = 0;
sbuf_printf(sb, "%i %i %i %i\n", semmsl, semmns, semopm, semmni);
return (0);
}
/*
* Filler function for proc/scsi/device_info
*/
@ -1080,8 +1136,12 @@ linprocfs_init(PFS_INIT_ARGS)
dir = pfs_create_dir(root, "sys", NULL, NULL, 0);
/* /proc/sys/kernel/... */
dir = pfs_create_dir(dir, "kernel", NULL, NULL, 0);
pfs_create_file(dir, "msgmni", &linprocfs_domsgmni,
NULL, NULL, PFS_RD);
pfs_create_file(dir, "pid_max", &linprocfs_dopid_max,
NULL, NULL, PFS_RD);
pfs_create_file(dir, "sem", &linprocfs_dosem,
NULL, NULL, PFS_RD);
return (0);
}