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9p: darwin: *xattr_nofollow implementations 

This implements the darwin equivalent of the functions that were
moved to 9p-util(-linux) earlier in this series in the new
9p-util-darwin file.

Signed-off-by: Keno Fischer <keno@juliacomputing.com>
[Michael Roitzsch: - Rebase for NixOS]
Signed-off-by: Michael Roitzsch <reactorcontrol@icloud.com>
Signed-off-by: Will Cohen <wwcohen@gmail.com>
Message-Id: <20220227223522.91937-8-wwcohen@gmail.com>
Signed-off-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
Acked-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
This commit is contained in:
Keno Fischer 2022-02-27 17:35:18 -05:00 committed by Christian Schoenebeck
parent 38d7fd68b0
commit 57b3910bc3
2 changed files with 65 additions and 0 deletions
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64
hw/9pfs/9p-util-darwin.c Normal file
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@ -0,0 +1,64 @@
/*
* 9p utilities (Darwin Implementation)
*
* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*/
#include "qemu/osdep.h"
#include "qemu/xattr.h"
#include "9p-util.h"
ssize_t fgetxattrat_nofollow(int dirfd, const char *filename, const char *name,
void *value, size_t size)
{
int ret;
int fd = openat_file(dirfd, filename,
O_RDONLY | O_PATH_9P_UTIL | O_NOFOLLOW, 0);
if (fd == -1) {
return -1;
}
ret = fgetxattr(fd, name, value, size, 0, 0);
close_preserve_errno(fd);
return ret;
}
ssize_t flistxattrat_nofollow(int dirfd, const char *filename,
char *list, size_t size)
{
int ret;
int fd = openat_file(dirfd, filename,
O_RDONLY | O_PATH_9P_UTIL | O_NOFOLLOW, 0);
if (fd == -1) {
return -1;
}
ret = flistxattr(fd, list, size, 0);
close_preserve_errno(fd);
return ret;
}
ssize_t fremovexattrat_nofollow(int dirfd, const char *filename,
const char *name)
{
int ret;
int fd = openat_file(dirfd, filename, O_PATH_9P_UTIL | O_NOFOLLOW, 0);
if (fd == -1) {
return -1;
}
ret = fremovexattr(fd, name, 0);
close_preserve_errno(fd);
return ret;
}
int fsetxattrat_nofollow(int dirfd, const char *filename, const char *name,
void *value, size_t size, int flags)
{
int ret;
int fd = openat_file(dirfd, filename, O_PATH_9P_UTIL | O_NOFOLLOW, 0);
if (fd == -1) {
return -1;
}
ret = fsetxattr(fd, name, value, size, 0, flags);
close_preserve_errno(fd);
return ret;
}

1
hw/9pfs/meson.build
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@ -14,6 +14,7 @@ fs_ss.add(files(
'coxattr.c',
))
fs_ss.add(when: 'CONFIG_LINUX', if_true: files('9p-util-linux.c'))
fs_ss.add(when: 'CONFIG_DARWIN', if_true: files('9p-util-darwin.c'))
fs_ss.add(when: 'CONFIG_XEN', if_true: files('xen-9p-backend.c'))
softmmu_ss.add_all(when: 'CONFIG_FSDEV_9P', if_true: fs_ss)