hw/9pfs/9p-util.c

   1 /*
   2  * 9p utilities
   3  *
   4  * Copyright IBM, Corp. 2017
   5  *
   6  * Authors:
   7  *  Greg Kurz <groug@kaod.org>
   8  *
   9  * This work is licensed under the terms of the GNU GPL, version 2 or later.
  10  * See the COPYING file in the top-level directory.
  11  */
  12
  13 #include "qemu/osdep.h"
  14 #include "qemu/xattr.h"
  15 #include "9p-util.h"
  16
  17 ssize_t fgetxattrat_nofollow(int dirfd, const char *filename, const char *name,
  18                              void *value, size_t size)
  19 {
  20     char *proc_path = g_strdup_printf("/proc/self/fd/%d/%s", dirfd, filename);
  21     int ret;
  22
  23     ret = lgetxattr(proc_path, name, value, size);
  24     g_free(proc_path);
  25     return ret;
  26 }
  27
  28 ssize_t flistxattrat_nofollow(int dirfd, const char *filename,
  29                               char *list, size_t size)
  30 {
  31     char *proc_path = g_strdup_printf("/proc/self/fd/%d/%s", dirfd, filename);
  32     int ret;
  33
  34     ret = llistxattr(proc_path, list, size);
  35     g_free(proc_path);
  36     return ret;
  37 }
  38
  39 ssize_t fremovexattrat_nofollow(int dirfd, const char *filename,
  40                                 const char *name)
  41 {
  42     char *proc_path = g_strdup_printf("/proc/self/fd/%d/%s", dirfd, filename);
  43     int ret;
  44
  45     ret = lremovexattr(proc_path, name);
  46     g_free(proc_path);
  47     return ret;
  48 }
  49
  50 int fsetxattrat_nofollow(int dirfd, const char *filename, const char *name,
  51                          void *value, size_t size, int flags)
  52 {
  53     char *proc_path = g_strdup_printf("/proc/self/fd/%d/%s", dirfd, filename);
  54     int ret;
  55
  56     ret = lsetxattr(proc_path, name, value, size, flags);
  57     g_free(proc_path);
  58     return ret;
  59 }