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authorUlrich Drepper <drepper@redhat.com>2004-03-22 19:54:06 +0000
committerUlrich Drepper <drepper@redhat.com>2004-03-22 19:54:06 +0000
commit61645263d4b3c72c9a33659a0fcabe1dd2814a98 (patch)
tree365a2e35feaf968b8d701d88bf477453fa47a35e /string/string.h
parent9708780004abee24d2c49fffe670820e36029377 (diff)
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Update.
2004-03-22 Jakub Jelinek <jakub@redhat.com> * sysdeps/unix/sysv/linux/sparc/sparc32/getpagesize.c (__getpagesize): Avoid warning about writing into read-only memory. * string/Makefile (routines): Add xpg-strerror. * string/string.h (strerror_r): If __USE_XOPEN2K but not __USE_GNU, redirect strerror_r to __xpg_strerror_r. * string/Versions (libc): Add __xpg_strerror_r@@GLIBC_2.3.4. * sysdeps/generic/xpg-strerror.c: New file. * sysdeps/mach/xpg-strerror.c: New file.
Diffstat (limited to 'string/string.h')
-rw-r--r--string/string.h25
1 files changed, 23 insertions, 2 deletions
diff --git a/string/string.h b/string/string.h
index 108d54da4e..19dd9c3188 100644
--- a/string/string.h
+++ b/string/string.h
@@ -243,9 +243,30 @@ __BEGIN_NAMESPACE_STD
extern char *strerror (int __errnum) __THROW;
__END_NAMESPACE_STD
#if defined __USE_XOPEN2K || defined __USE_MISC
-/* Reentrant version of `strerror'. If a temporary buffer is required, at
- most BUFLEN bytes of BUF will be used. */
+/* Reentrant version of `strerror'.
+ There are 2 flavors of `strerror_r', GNU which returns the string
+ and may or may not use the supplied temporary buffer and POSIX one
+ which fills the string into the buffer.
+ To use the POSIX version, -D_XOPEN_SOURCE=600 or -D_POSIX_C_SOURCE=200112L
+ without -D_GNU_SOURCE is needed, otherwise the GNU version is
+ preferred. */
+# if defined __USE_XOPEN2K && !defined __USE_GNU
+/* Fill BUF with a string describing the meaning of the `errno' code in
+ ERRNUM. */
+# ifdef __REDIRECT
+extern int __REDIRECT (strerror_r,
+ (int __errnum, char *__buf, size_t __buflen),
+ __xpg_strerror_r) __THROW;
+# else
+extern int __xpg_strerror_r (int __errnum, char *__buf, size_t __buflen)
+ __THROW;
+# define strerror_r __xpg_strerror_r
+# endif
+# else
+/* If a temporary buffer is required, at most BUFLEN bytes of BUF will be
+ used. */
extern char *strerror_r (int __errnum, char *__buf, size_t __buflen) __THROW;
+# endif
#endif
/* We define this function always since `bzero' is sometimes needed when