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* sysdeps/unix/sysv/linux/bits/local_lim.h: Undefined ARG_MAX if

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<linux/limits.h> has defined it.
	* sysdeps/unix/sysv/linux/sys/param.h: Define NCARGS to the legacy
	ARG_MAX value and prevent ARG_MAX from being defined by the kernel
	headers.
	* sysdeps/unix/sysv/linux/sysconf.c: Define legacy_ARG_MAX and use
	it instead of ARG_MAX.
This commit is contained in:
Ulrich Drepper
2008-03-27 15:20:38 +00:00
parent fde15fdc5b
commit f96853beaf
10 changed files with 95 additions and 12 deletions
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9
sysdeps/unix/sysv/linux/sysconf.c
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@ -27,6 +27,11 @@
#include <not-cancel.h>
#include <ldsodefs.h>
/* Legacy value of ARG_MAX. The macro is now not defined since the
actual value varies based on the stack size. */
#define legacy_ARG_MAX 131072
static long int posix_sysconf (int name);
@ -83,10 +88,10 @@ __sysconf (int name)
/* Use getrlimit to get the stack limit. */
struct rlimit rlimit;
if (__getrlimit (RLIMIT_STACK, &rlimit) == 0)
return MAX (ARG_MAX, rlimit.rlim_cur / 4);
return MAX (legacy_ARG_MAX, rlimit.rlim_cur / 4);
}
return ARG_MAX;
return legacy_ARG_MAX;
case _SC_NGROUPS_MAX:
/* Try to read the information from the /proc/sys/kernel/ngroups_max