Messages in this thread Patch in this message | | | Date | Fri, 16 Nov 2007 18:08:40 +0300 | From | Alexey Dobriyan <> | Subject | [PATCH 2/4] proc: detect duplicate names on registration |
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Andrew, please drop procfs-detect-duplicate-names.patch and apply this instead. ------------ [PATCH] proc: detect duplicate names on registration
From: Zhang Rui <rui.zhang@intel.com>
Print a warning if PDE is registered with a name which already exists in target directory.
Bug report and a simple fix can be found here: http://bugzilla.kernel.org/show_bug.cgi?id=8798
[\n fixlet and no undescriptive variable usage --adobriyan] Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Alexey Dobriyan <adobriyan@sw.ru> ---
fs/proc/generic.c | 10 ++++++++++ 1 file changed, 10 insertions(+)
--- a/fs/proc/generic.c +++ b/fs/proc/generic.c @@ -518,6 +518,7 @@ static const struct inode_operations proc_dir_inode_operations = { static int proc_register(struct proc_dir_entry * dir, struct proc_dir_entry * dp) { unsigned int i; + struct proc_dir_entry *tmp; i = get_inode_number(); if (i == 0) @@ -536,6 +537,15 @@ static int proc_register(struct proc_dir_entry * dir, struct proc_dir_entry * dp } spin_lock(&proc_subdir_lock); + + for (tmp = dir->subdir; tmp; tmp = tmp->next) + if (strcmp(tmp->name, dp->name) == 0) { + printk(KERN_WARNING "PDE '%s' already registered\n", + dp->name); + dump_stack(); + break; + } + dp->next = dir->subdir; dp->parent = dir; dir->subdir = dp; - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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