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| author | Joseph Myers <joseph@codesourcery.com> | 2012-08-10 15:53:27 +0000 |
|---|---|---|
| committer | Joseph Myers <joseph@codesourcery.com> | 2012-08-10 15:53:27 +0000 |
| commit | 121dce05fe25ed878088fa7351c840a303182c65 (patch) | |
| tree | b67c4ee7205ad5e59068608df8fd21a08d6ea3de /sysdeps/unix/sysv | |
| parent | 77480c6ba52e49a70f37c6f49d59f2f72501aca0 (diff) | |
| download | glibc-121dce05fe25ed878088fa7351c840a303182c65.zip glibc-121dce05fe25ed878088fa7351c840a303182c65.tar.gz glibc-121dce05fe25ed878088fa7351c840a303182c65.tar.bz2 | |
Move Linux kernel version conditionals to kernel-features.h.
Diffstat (limited to 'sysdeps/unix/sysv')
| -rw-r--r-- | sysdeps/unix/sysv/linux/kernel-features.h | 7 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/sysconf.c | 12 |
2 files changed, 13 insertions, 6 deletions
diff --git a/sysdeps/unix/sysv/linux/kernel-features.h b/sysdeps/unix/sysv/linux/kernel-features.h index 21fba88..bf81c4a 100644 --- a/sysdeps/unix/sysv/linux/kernel-features.h +++ b/sysdeps/unix/sysv/linux/kernel-features.h @@ -210,6 +210,13 @@ # define __ASSUME_O_CLOEXEC 1 #endif +/* From 2.6.23 onwards the value of ARG_MAX depends on the stack + size. */ +#define __LINUX_ARG_MAX_STACK_BASED_MIN_KERNEL 0x020617 +#if __LINUX_KERNEL_VERSION >= __LINUX_ARG_MAX_STACK_BASED_MIN_KERNEL +# define __ASSUME_ARG_MAX_STACK_BASED 1 +#endif + /* Support for ADJ_OFFSET_SS_READ was added in 2.6.24. */ #if __LINUX_KERNEL_VERSION >= 0x020618 # define __ASSUME_ADJ_OFFSET_SS_READ 1 diff --git a/sysdeps/unix/sysv/linux/sysconf.c b/sysdeps/unix/sysv/linux/sysconf.c index 5c8f45d..47ce5ef 100644 --- a/sysdeps/unix/sysv/linux/sysconf.c +++ b/sysdeps/unix/sysv/linux/sysconf.c @@ -1,5 +1,5 @@ /* Get file-specific information about a file. Linux version. - Copyright (C) 2003,2004,2006 2008,2009,2011 Free Software Foundation, Inc. + Copyright (C) 2003-2012 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -88,11 +88,11 @@ __sysconf (int name) return HAS_CPUCLOCK (name); case _SC_ARG_MAX: -#if __LINUX_KERNEL_VERSION < 0x020617 - /* Determine whether this is a kernel 2.6.23 or later. Only - then do we have an argument limit determined by the stack - size. */ - if (GLRO(dl_discover_osversion) () >= 0x020617) +#if !__ASSUME_ARG_MAX_STACK_BASED + /* Determine whether this is a kernel with an argument limit + determined by the stack size. */ + if (GLRO(dl_discover_osversion) () + >= __LINUX_ARG_MAX_STACK_BASED_MIN_KERNEL) #endif /* Use getrlimit to get the stack limit. */ if (__getrlimit (RLIMIT_STACK, &rlimit) == 0) |