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| author | Eric W. Biederman <ebiederm@xmission.com> | 2012-01-22 08:09:45 +0400 |
|---|---|---|
| committer | Eric W. Biederman <ebiederm@xmission.com> | 2012-01-25 04:40:29 +0400 |
| commit | 6980128fe1b834c92a85e556ca8198030f0d8d01 (patch) | |
| tree | 2814b1771a8e70538215ea47e104e2ab89ba4048 /fs/proc | |
| parent | 7ec66d06362da7684a4948c4c2bf1f8546425df4 (diff) | |
| download | linux-6980128fe1b834c92a85e556ca8198030f0d8d01.tar.xz | |
sysctl: Add sysctl_print_dir and use it in get_subdir
When there are errors it is very nice to know the full sysctl path.
Add a simple function that computes the sysctl path and prints it
out.
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Diffstat (limited to 'fs/proc')
| -rw-r--r-- | fs/proc/proc_sysctl.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/fs/proc/proc_sysctl.c b/fs/proc/proc_sysctl.c index 3c0767d5a55f..a78556514a87 100644 --- a/fs/proc/proc_sysctl.c +++ b/fs/proc/proc_sysctl.c @@ -53,6 +53,13 @@ static DEFINE_SPINLOCK(sysctl_lock); static void drop_sysctl_table(struct ctl_table_header *header); +static void sysctl_print_dir(struct ctl_dir *dir) +{ + if (dir->header.parent) + sysctl_print_dir(dir->header.parent); + printk(KERN_CONT "%s/", dir->header.ctl_table[0].procname); +} + static int namecmp(const char *name1, int len1, const char *name2, int len2) { int minlen; @@ -822,7 +829,9 @@ found: subdir->header.nreg++; failed: if (unlikely(IS_ERR(subdir))) { - printk(KERN_ERR "sysctl could not get directory: %*.*s %ld\n", + printk(KERN_ERR "sysctl could not get directory: "); + sysctl_print_dir(dir); + printk(KERN_CONT "/%*.*s %ld\n", namelen, namelen, name, PTR_ERR(subdir)); } drop_sysctl_table(&dir->header); |