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| author | Alexey Gladkov <gladkov.alexey@gmail.com> | 2020-04-23 23:03:10 +0300 |
|---|---|---|
| committer | Eric W. Biederman <ebiederm@xmission.com> | 2020-04-25 00:38:30 +0300 |
| commit | c59f415a7cb6e1e1e1cdbd6ee370b050e95f6b21 (patch) | |
| tree | 79e9113bc0cdb5e48f8f4f6ab2163ad2ebae82c1 /security/tomoyo | |
| parent | 6ade99ec6175ab2b54c227521e181e1c3c2bfc8a (diff) | |
| download | linux-c59f415a7cb6e1e1e1cdbd6ee370b050e95f6b21.tar.xz | |
Use proc_pid_ns() to get pid_namespace from the proc superblock
To get pid_namespace from the procfs superblock should be used a special
helper. This will avoid errors when s_fs_info will change the type.
Link: https://lore.kernel.org/lkml/20200423200316.164518-3-gladkov.alexey@gmail.com/
Link: https://lore.kernel.org/lkml/20200423112858.95820-1-gladkov.alexey@gmail.com/
Link: https://lore.kernel.org/lkml/06B50A1C-406F-4057-BFA8-3A7729EA7469@lca.pw/
Signed-off-by: Alexey Gladkov <gladkov.alexey@gmail.com>
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Diffstat (limited to 'security/tomoyo')
| -rw-r--r-- | security/tomoyo/realpath.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/security/tomoyo/realpath.c b/security/tomoyo/realpath.c index bf38fc1b59b2..08b096e2f7e3 100644 --- a/security/tomoyo/realpath.c +++ b/security/tomoyo/realpath.c @@ -7,6 +7,7 @@ #include "common.h" #include <linux/magic.h> +#include <linux/proc_fs.h> /** * tomoyo_encode2 - Encode binary string to ascii string. @@ -161,9 +162,10 @@ static char *tomoyo_get_local_path(struct dentry *dentry, char * const buffer, if (sb->s_magic == PROC_SUPER_MAGIC && *pos == '/') { char *ep; const pid_t pid = (pid_t) simple_strtoul(pos + 1, &ep, 10); + struct pid_namespace *proc_pidns = proc_pid_ns(d_inode(dentry)); if (*ep == '/' && pid && pid == - task_tgid_nr_ns(current, sb->s_fs_info)) { + task_tgid_nr_ns(current, proc_pidns)) { pos = ep - 5; if (pos < buffer) goto out; |