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string_helpers: add kstrdup_quotable_file

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Allocate a NULL-terminated file path with special characters escaped,
safe for logging.

Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: James Morris <james.l.morris@oracle.com>
This commit is contained in:
Kees Cook 2016-04-20 15:46:25 -07:00 • committed by James Morris
parent 0d0443288f
commit 21985319ad
2 changed files with 33 additions and 0 deletions
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3
include/linux/string_helpers.h
View file

@ -3,6 +3,8 @@
#include <linux/types.h>
struct file;
/* Descriptions of the types of units to
* print in */
enum string_size_units {
@ -70,5 +72,6 @@ static inline int string_escape_str_any_np(const char *src, char *dst,
char *kstrdup_quotable(const char *src, gfp_t gfp);
char *kstrdup_quotable_cmdline(struct task_struct *task, gfp_t gfp);
char *kstrdup_quotable_file(struct file *file, gfp_t gfp);
#endif