Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Signed-off-by: Stéphane Graber <stgraber@ubuntu.com>
- Loading branch information
Showing
3 changed files
with
152 additions
and
1 deletion.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,108 @@ | ||
/* | ||
* lxc: linux Container library | ||
* | ||
* (C) Copyright IBM Corp. 2007, 2008 | ||
* | ||
* Authors: | ||
* Daniel Lezcano <daniel.lezcano at free.fr> | ||
* | ||
* This library is free software; you can redistribute it and/or | ||
* modify it under the terms of the GNU Lesser General Public | ||
* License as published by the Free Software Foundation; either | ||
* version 2.1 of the License, or (at your option) any later version. | ||
* | ||
* This library is distributed in the hope that it will be useful, | ||
* but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
* Lesser General Public License for more details. | ||
* | ||
* You should have received a copy of the GNU Lesser General Public | ||
* License along with this library; if not, write to the Free Software | ||
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | ||
*/ | ||
|
||
|
||
#include <sys/types.h> | ||
#include <sys/stat.h> | ||
#include <unistd.h> | ||
#include <stdlib.h> | ||
#include <stdbool.h> | ||
#include <string.h> | ||
#include <sys/vfs.h> | ||
#include <stdarg.h> | ||
|
||
#include "utils.h" | ||
|
||
bool file_exists(const char *f) | ||
{ | ||
struct stat statbuf; | ||
|
||
return stat(f, &statbuf) == 0; | ||
} | ||
|
||
void *must_realloc(void *orig, size_t sz) | ||
{ | ||
void *ret; | ||
|
||
do { | ||
ret = realloc(orig, sz); | ||
} while (!ret); | ||
|
||
return ret; | ||
} | ||
|
||
char *must_copy_string(const char *entry) | ||
{ | ||
char *ret; | ||
|
||
if (!entry) | ||
return NULL; | ||
do { | ||
ret = strdup(entry); | ||
} while (!ret); | ||
|
||
return ret; | ||
} | ||
|
||
char *must_make_path(const char *first, ...) | ||
{ | ||
va_list args; | ||
char *cur, *dest; | ||
size_t full_len = strlen(first); | ||
|
||
dest = must_copy_string(first); | ||
|
||
va_start(args, first); | ||
while ((cur = va_arg(args, char *)) != NULL) { | ||
full_len += strlen(cur); | ||
if (cur[0] != '/') | ||
full_len++; | ||
dest = must_realloc(dest, full_len + 1); | ||
if (cur[0] != '/') | ||
strcat(dest, "/"); | ||
strcat(dest, cur); | ||
} | ||
va_end(args); | ||
|
||
return dest; | ||
} | ||
|
||
bool is_fs_type(const struct statfs *fs, fs_type_magic magic_val) | ||
{ | ||
return (fs->f_type == (fs_type_magic)magic_val); | ||
} | ||
|
||
bool has_fs_type(const char *path, fs_type_magic magic_val) | ||
{ | ||
bool has_type; | ||
int ret; | ||
struct statfs sb; | ||
|
||
ret = statfs(path, &sb); | ||
if (ret < 0) | ||
return false; | ||
|
||
has_type = is_fs_type(&sb, magic_val); | ||
|
||
return has_type; | ||
} |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,43 @@ | ||
/* | ||
* lxc: linux Container library | ||
* | ||
* (C) Copyright IBM Corp. 2007, 2008 | ||
* | ||
* Authors: | ||
* Daniel Lezcano <daniel.lezcano at free.fr> | ||
* | ||
* This library is free software; you can redistribute it and/or | ||
* modify it under the terms of the GNU Lesser General Public | ||
* License as published by the Free Software Foundation; either | ||
* version 2.1 of the License, or (at your option) any later version. | ||
* | ||
* This library is distributed in the hope that it will be useful, | ||
* but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
* Lesser General Public License for more details. | ||
* | ||
* You should have received a copy of the GNU Lesser General Public | ||
* License along with this library; if not, write to the Free Software | ||
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | ||
*/ | ||
#ifndef __PAM_UTILS_H | ||
#define __PAM_UTILS_H | ||
|
||
#include <sys/vfs.h> | ||
|
||
#ifndef CGROUP_SUPER_MAGIC | ||
#define CGROUP_SUPER_MAGIC 0x27e0eb | ||
#endif | ||
|
||
#ifndef CGROUP2_SUPER_MAGIC | ||
#define CGROUP2_SUPER_MAGIC 0x63677270 | ||
#endif | ||
|
||
typedef __typeof__(((struct statfs *)NULL)->f_type) fs_type_magic; | ||
extern bool file_exists(const char *f); | ||
extern void *must_realloc(void *orig, size_t sz); | ||
extern char *must_copy_string(const char *entry); | ||
__attribute__((sentinel)) extern char *must_make_path(const char *first, ...); | ||
extern bool has_fs_type(const char *path, fs_type_magic magic_val); | ||
|
||
#endif /* __PAM_UTILS_H */ |