[04/30] Linux: consolidate chown implementation

Message ID 20221019221433.1082017-5-adhemerval.zanella@linaro.org
State Committed
Commit 1001abfa14d5289236dcca740ab72ec4d1fa5352
Headers
Series Remove Linux generic sysdep |

Checks

Context Check Description
dj/TryBot-apply_patch success Patch applied to master at the time it was sent

Commit Message

Adhemerval Zanella Netto Oct. 19, 2022, 10:14 p.m. UTC
  Use chown syscall if defined, otherwise use fchownat.

Checked on x86_64-linux-gnu.
---
 sysdeps/unix/sysv/linux/{generic => }/chown.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)
 rename sysdeps/unix/sysv/linux/{generic => }/chown.c (77%)
  

Comments

Carlos O'Donell Dec. 5, 2022, 4:40 p.m. UTC | #1
On 10/19/22 18:14, Adhemerval Zanella via Libc-alpha wrote:
> Use chown syscall if defined, otherwise use fchownat.
> 
> Checked on x86_64-linux-gnu.

LGTM.

No regressions on x86_64 and i686.

Reviewed-by: Carlos O'Donell <carlos@redhat.com>
Tested-by: Carlos O'Donell <carlos@redhat.com>


> ---
>  sysdeps/unix/sysv/linux/{generic => }/chown.c | 9 +++++++--
>  1 file changed, 7 insertions(+), 2 deletions(-)
>  rename sysdeps/unix/sysv/linux/{generic => }/chown.c (77%)
> 
> diff --git a/sysdeps/unix/sysv/linux/generic/chown.c b/sysdeps/unix/sysv/linux/chown.c
> similarity index 77%
> rename from sysdeps/unix/sysv/linux/generic/chown.c
> rename to sysdeps/unix/sysv/linux/chown.c
> index 53997a1127..c1cd4d6c3d 100644
> --- a/sysdeps/unix/sysv/linux/generic/chown.c
> +++ b/sysdeps/unix/sysv/linux/chown.c
> @@ -1,4 +1,5 @@
> -/* Copyright (C) 2011-2022 Free Software Foundation, Inc.
> +/* Change ownership of a file.  Linux version.
> +   Copyright (C) 2011-2022 Free Software Foundation, Inc.
>     This file is part of the GNU C Library.
>  
>     The GNU C Library is free software; you can redistribute it and/or
> @@ -23,7 +24,11 @@
>  int
>  __chown (const char *file, uid_t owner, gid_t group)
>  {
> -  return INLINE_SYSCALL (fchownat, 5, AT_FDCWD, file, owner, group, 0);
> +#ifdef __NR_chown
> +  return INLINE_SYSCALL_CALL (chown, file, owner, groups);
> +#else
> +  return INLINE_SYSCALL_CALL (fchownat, AT_FDCWD, file, owner, group, 0);
> +#endif

OK.

>  }
>  libc_hidden_def (__chown)
>  weak_alias (__chown, chown)
  

Patch

diff --git a/sysdeps/unix/sysv/linux/generic/chown.c b/sysdeps/unix/sysv/linux/chown.c
similarity index 77%
rename from sysdeps/unix/sysv/linux/generic/chown.c
rename to sysdeps/unix/sysv/linux/chown.c
index 53997a1127..c1cd4d6c3d 100644
--- a/sysdeps/unix/sysv/linux/generic/chown.c
+++ b/sysdeps/unix/sysv/linux/chown.c
@@ -1,4 +1,5 @@ 
-/* Copyright (C) 2011-2022 Free Software Foundation, Inc.
+/* Change ownership of a file.  Linux version.
+   Copyright (C) 2011-2022 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -23,7 +24,11 @@ 
 int
 __chown (const char *file, uid_t owner, gid_t group)
 {
-  return INLINE_SYSCALL (fchownat, 5, AT_FDCWD, file, owner, group, 0);
+#ifdef __NR_chown
+  return INLINE_SYSCALL_CALL (chown, file, owner, groups);
+#else
+  return INLINE_SYSCALL_CALL (fchownat, AT_FDCWD, file, owner, group, 0);
+#endif
 }
 libc_hidden_def (__chown)
 weak_alias (__chown, chown)