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seq_file: reuse string_escape_str()

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strint_escape_str() escapes input string by given criteria.  In case of
seq_escape() the criteria is to convert some characters to their octal
representation.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Andy Shevchenko 2015-11-06 16:32:40 -08:00 committed by Linus Torvalds
parent 8b91a318e4
commit 25c6bb76ea
1 changed files with 6 additions and 19 deletions
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25
fs/seq_file.c
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@ -13,6 +13,7 @@
#include <linux/cred.h>
#include <linux/mm.h>
#include <linux/printk.h>
#include <linux/string_helpers.h>
#include <asm/uaccess.h>
#include <asm/page.h>
@ -377,26 +378,12 @@ EXPORT_SYMBOL(seq_release);
*/
void seq_escape(struct seq_file *m, const char *s, const char *esc)
{
char *end = m->buf + m->size;
char *p;
char c;
char *buf;
size_t size = seq_get_buf(m, &buf);
int ret;
for (p = m->buf + m->count; (c = *s) != '\0' && p < end; s++) {
if (!strchr(esc, c)) {
*p++ = c;
continue;
}
if (p + 3 < end) {
*p++ = '\\';
*p++ = '0' + ((c & 0300) >> 6);
*p++ = '0' + ((c & 070) >> 3);
*p++ = '0' + (c & 07);
continue;
}
seq_set_overflow(m);
return;
}
m->count = p - m->buf;
ret = string_escape_str(s, buf, size, ESCAPE_OCTAL, esc);
seq_commit(m, ret < size ? ret : -1);
}
EXPORT_SYMBOL(seq_escape);