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authorAdhemerval Zanella <adhemerval.zanella@linaro.org>2021-03-11 08:21:06 -0300
committerAdhemerval Zanella <adhemerval.zanella@linaro.org>2021-03-11 10:51:55 -0300
commit94caafa040e4b4289c968cd70d53041b1463ac4d (patch)
tree3cf4b0cecd7a112f32fb6a9756f0203eac635cd7 /io/fstat64.c
parente91f44089c3203f647d6feadb958ff5f388427bd (diff)
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io: Return EBAFD for negative file descriptor on fstat (BZ #27559)
Now that fstat is implemented on top fstatat we need to handle negative inputs. The implementation now rejects AT_FDCWD, which would otherwise be accepted by the kernel. Checked on x86_64-linux-gnu and on i686-linux-gnu.
Diffstat (limited to 'io/fstat64.c')
-rw-r--r--io/fstat64.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/io/fstat64.c b/io/fstat64.c
index addf379..6181706 100644
--- a/io/fstat64.c
+++ b/io/fstat64.c
@@ -16,10 +16,16 @@
<https://www.gnu.org/licenses/>. */
#include <sys/stat.h>
+#include <errno.h>
int
__fstat64 (int fd, struct stat64 *buf)
{
+ if (fd < 0)
+ {
+ __set_errno (EBADF);
+ return -1;
+ }
return __fstatat64 (fd, "", buf, AT_EMPTY_PATH);
}
hidden_def (__fstat64)