[PATCH] xfs_io: fix statx call for changed UAPI

[PATCH] xfs_io: fix statx call for changed UAPI

[Eric Sandeen]

Due to a late-breaking change in the statx UAPI in kernel commit

1e2f82d1 statx: Kill fd-with-NULL-path support in favour of AT_EMPTY_PATH

we'll need to fix the way we call the syscall in xfs_io.

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
---

diff --git a/io/stat.c b/io/stat.c
index c5b3075..783eb2e 100644
--- a/io/stat.c
+++ b/io/stat.c
@@ -351,7 +351,7 @@ statx_f(
 		return command_usage(&statx_cmd);
 
 	memset(&stx, 0xbf, sizeof(stx));
-	if (_statx(file->fd, NULL, atflag, mask, &stx) < 0) {
+	if (_statx(file->fd, "", atflag | AT_EMPTY_PATH, mask, &stx) < 0) {
 		perror("statx");
 		return 0;
 	}
diff --git a/io/statx.h b/io/statx.h
index ff08e27..3b5978d 100644
--- a/io/statx.h
+++ b/io/statx.h
@@ -4,6 +4,10 @@
 #include <unistd.h>
 #include <sys/syscall.h>
 
+#ifndef AT_EMPTY_PATH
+#define AT_EMPTY_PATH	0x1000
+#endif
+
 #ifndef AT_STATX_SYNC_TYPE
 #define AT_STATX_SYNC_TYPE      0x6000  /* Type of synchronisation required from statx() */
 #define AT_STATX_SYNC_AS_STAT   0x0000  /* - Do whatever stat() does */

Re: [PATCH] xfs_io: fix statx call for changed UAPI

[David Howells]

Eric Sandeen <sandeen@redhat.com> wrote:

> Due to a late-breaking change in the statx UAPI in kernel commit
> 
> 1e2f82d1 statx: Kill fd-with-NULL-path support in favour of AT_EMPTY_PATH
> 
> we'll need to fix the way we call the syscall in xfs_io.
> 
> Signed-off-by: Eric Sandeen <sandeen@redhat.com>

Reviewed-by: David Howells <dhowells@redhat.com>

Re: [PATCH] xfs_io: fix statx call for changed UAPI

[Carlos Maiolino]

On Wed, Apr 26, 2017 at 05:32:36PM -0500, Eric Sandeen wrote:
> Due to a late-breaking change in the statx UAPI in kernel commit
> 
> 1e2f82d1 statx: Kill fd-with-NULL-path support in favour of AT_EMPTY_PATH
> 
> we'll need to fix the way we call the syscall in xfs_io.
> 
> Signed-off-by: Eric Sandeen <sandeen@redhat.com>
> ---

Reviewed-by: Carlos Maiolino <cmaiolino@redhat.com>

> 
> diff --git a/io/stat.c b/io/stat.c
> index c5b3075..783eb2e 100644
> --- a/io/stat.c
> +++ b/io/stat.c
> @@ -351,7 +351,7 @@ statx_f(
>  		return command_usage(&statx_cmd);
>  
>  	memset(&stx, 0xbf, sizeof(stx));
> -	if (_statx(file->fd, NULL, atflag, mask, &stx) < 0) {
> +	if (_statx(file->fd, "", atflag | AT_EMPTY_PATH, mask, &stx) < 0) {
>  		perror("statx");
>  		return 0;
>  	}
> diff --git a/io/statx.h b/io/statx.h
> index ff08e27..3b5978d 100644
> --- a/io/statx.h
> +++ b/io/statx.h
> @@ -4,6 +4,10 @@
>  #include <unistd.h>
>  #include <sys/syscall.h>
>  
> +#ifndef AT_EMPTY_PATH
> +#define AT_EMPTY_PATH	0x1000
> +#endif
> +
>  #ifndef AT_STATX_SYNC_TYPE
>  #define AT_STATX_SYNC_TYPE      0x6000  /* Type of synchronisation required from statx() */
>  #define AT_STATX_SYNC_AS_STAT   0x0000  /* - Do whatever stat() does */
> 
> --
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-- 
Carlos