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2004-03-28  Ulrich Drepper  <drepper@redhat.com>

	* sysdeps/unix/sysv/linux/sysconf.c (__sysconf): Handle
	_SC_SIGQUEUE_MAX.
This commit is contained in:
Ulrich Drepper
2004-03-28 10:55:26 +00:00
parent eec8b6cae5
commit 3bd1aa475d
2 changed files with 39 additions and 25 deletions
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5
ChangeLog
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@ -1,3 +1,8 @@
2004-03-28 Ulrich Drepper <drepper@redhat.com>
* sysdeps/unix/sysv/linux/sysconf.c (__sysconf): Handle
_SC_SIGQUEUE_MAX.
2004-03-26 Ulrich Drepper <drepper@redhat.com> 2004-03-26 Ulrich Drepper <drepper@redhat.com>
* elf/dl-caller.c: New file. * elf/dl-caller.c: New file.

59
sysdeps/unix/sysv/linux/sysconf.c
View File

@ -32,6 +32,8 @@ static long int posix_sysconf (int name);
long int long int
__sysconf (int name) __sysconf (int name)
{ {
const char *procfname = NULL;
switch (name) switch (name)
{ {
#ifdef __NR_clock_getres #ifdef __NR_clock_getres
@ -47,37 +49,44 @@ __sysconf (int name)
#endif #endif
case _SC_NGROUPS_MAX: case _SC_NGROUPS_MAX:
{ /* Try to read the information from the /proc/sys/kernel/ngroups_max
/* Try to read the information from the /proc/sys/kernel/ngroups_max file. */
file. */ procfname = "/proc/sys/kernel/ngroups_max";
int fd = open_not_cancel_2 ("/proc/sys/kernel/ngroups_max", O_RDONLY); break;
if (fd != -1)
{
/* This is more than enough, the file contains a single
integer. */
char buf[32];
ssize_t n;
n = TEMP_FAILURE_RETRY (read_not_cancel (fd, buf,
sizeof (buf) - 1));
close_not_cancel_no_status (fd);
if (n > 0) case _SC_SIGQUEUE_MAX:
{ /* The /proc/sys/kernel/rtsig-max file contains the answer. */
/* Terminate the string. */ procfname = "/proc/sys/kernel/rtsig-max";
buf[n] = '\0';
char *endp;
long int res = strtol (buf, &endp, 10);
if (endp != buf && (*endp == '\0' || *endp == '\n'))
return res;
}
}
}
break; break;
default: default:
break; break;
} }
if (procfname != NULL)
{
int fd = open_not_cancel_2 (procfname, O_RDONLY);
if (fd != -1)
{
/* This is more than enough, the file contains a single integer. */
char buf[32];
ssize_t n;
n = TEMP_FAILURE_RETRY (read_not_cancel (fd, buf, sizeof (buf) - 1));
close_not_cancel_no_status (fd);
if (n > 0)
{
/* Terminate the string. */
buf[n] = '\0';
char *endp;
long int res = strtol (buf, &endp, 10);
if (endp != buf && (*endp == '\0' || *endp == '\n'))
return res;
}
}
}
return posix_sysconf (name); return posix_sysconf (name);
} }