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Subject: hurd: Make __realpath return EINVAL on NULL buf

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As Posix and stdlib/test-canon.c expects it, and rather than letting
pathconf crash.
This commit is contained in:
Samuel Thibault 2023-08-03 21:15:58 +02:00
parent 5e4435f960
commit 2345bc44bb
1 changed files with 10 additions and 1 deletions
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11
debug/realpath_chk.c
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@ -19,6 +19,7 @@
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
char *
@ -30,7 +31,15 @@ __realpath_chk (const char *buf, char *resolved, size_t resolvedlen)
return __realpath (buf, resolved);
#else
long int pathmax =__pathconf (buf, _PC_PATH_MAX);
long int pathmax;
if (buf == NULL)
{
__set_errno (EINVAL);
return NULL;
}
pathmax = __pathconf (buf, _PC_PATH_MAX);
if (pathmax != -1)
{
/* We do have a fixed limit. */