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| author | Yuriy Kolerov <yuriy.kolerov@synopsys.com> | 2015-09-23 15:43:37 +0300 |
|---|---|---|
| committer | Waldemar Brodkorb <wbx@openadk.org> | 2015-10-05 22:07:08 +0200 |
| commit | 2eb8070e678937e7e7835d167cffb11628b8862e (patch) | |
| tree | 295e81dff6fc1bd713b9e7a90fb9992043b7c1f6 /libc/sysdeps/linux/common/fallocate64.c | |
| parent | 39e50d004f9b2cfd0988f670a877d83ee17d2418 (diff) | |
libc: fix setting return value and errno in fallocate()
fallocate system call must return 0 on success. On error, -1 is returned
and errno is set to indicate the error.
However there is an error in fallocate which is fixed by this patch - it
does not set errno and returns invalid value on error (it returns error
code instead of -1).
This error is detected in LTP's test kernel/syscalls/fallocate02:
----------->8----------
fallocate(..., 1, 0, 1024) failed, expected errno:9: TEST_ERRNO=0
fallocate(..., 1, -1024, 1024) failed, expected errno:22: TEST_ERRNO=0
fallocate(..., 1, 1024, -1024) failed, expected errno:22: TEST_ERRNO=0
fallocate(..., 1, 12288, 0) failed, expected errno:22: TEST_ERRNO=0
fallocate(..., 1, 12288, -1024) failed, expected errno:22: TEST_ERRNO=0
fallocate(..., 1, -24576, 1024) failed, expected errno:22: TEST_ERRNO=0
----------->8----------
Signed-off-by: Yuriy Kolerov <yuriy.kolerov@synopsys.com>
Diffstat (limited to 'libc/sysdeps/linux/common/fallocate64.c')
| -rw-r--r-- | libc/sysdeps/linux/common/fallocate64.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/libc/sysdeps/linux/common/fallocate64.c b/libc/sysdeps/linux/common/fallocate64.c index cf75693d6..1aa351ebe 100644 --- a/libc/sysdeps/linux/common/fallocate64.c +++ b/libc/sysdeps/linux/common/fallocate64.c @@ -13,6 +13,7 @@ #include <fcntl.h> #include <bits/kernel-features.h> #include <stdint.h> +#include <errno.h> #if defined __NR_fallocate @@ -27,9 +28,11 @@ int attribute_hidden __libc_fallocate64(int fd, int mode, __off64_t offset, INTERNAL_SYSCALL_DECL(err); ret = (int) (INTERNAL_SYSCALL(fallocate, err, 6, fd, mode, OFF64_HI_LO (offset), OFF64_HI_LO (len))); - if (unlikely(INTERNAL_SYSCALL_ERROR_P (ret, err))) - return INTERNAL_SYSCALL_ERRNO (ret, err); - return 0; + if (unlikely(INTERNAL_SYSCALL_ERROR_P (ret, err))) { + __set_errno(INTERNAL_SYSCALL_ERRNO (ret, err)); + ret = -1; + } + return ret; } # if defined __UCLIBC_LINUX_SPECIFIC__ && defined __USE_GNU |