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malloc_conf_init: revert errno value when readlink(2) fail.

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This commit is contained in:
Alexandre Perrin 2013-09-20 19:58:11 +02:00 committed by Jason Evans
parent a33488d648
commit dd6ef0302f
1 changed files with 14 additions and 14 deletions
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28
src/jemalloc.c
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@ -436,8 +436,9 @@ malloc_conf_init(void)
}
break;
case 1: {
int linklen = 0;
#ifndef _WIN32
int linklen;
int saved_errno = errno;
const char *linkname =
# ifdef JEMALLOC_PREFIX
"/etc/"JEMALLOC_PREFIX"malloc.conf"
@ -446,21 +447,20 @@ malloc_conf_init(void)
# endif
;
if ((linklen = readlink(linkname, buf,
sizeof(buf) - 1)) != -1) {
/*
* Use the contents of the "/etc/malloc.conf"
* symbolic link's name.
*/
buf[linklen] = '\0';
opts = buf;
} else
#endif
{
/*
* Try to use the contents of the "/etc/malloc.conf"
* symbolic link's name.
*/
linklen = readlink(linkname, buf, sizeof(buf) - 1);
if (linklen == -1) {
/* No configuration specified. */
buf[0] = '\0';
opts = buf;
linklen = 0;
/* restore errno */
set_errno(saved_errno);
}
#endif
buf[linklen] = '\0';
opts = buf;
break;
} case 2: {
const char *envname =