diff options
| author |   Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2015-11-06 16:30:03 -0800 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2015-11-06 17:50:42 -0800 |
| commit | 3a49f3d2a10dfb27411d321900197a3d6c52405b (patch) | |
| tree | 0f7073139fddf2dc6d1b1166a4d87458d3836ede /fs/proc | |
| parent | mm: use 'unsigned int' for compound_dtor/compound_order on 64BIT (diff) | |
| download | linux-dev-3a49f3d2a10dfb27411d321900197a3d6c52405b.tar.xz linux-dev-3a49f3d2a10dfb27411d321900197a3d6c52405b.zip | |
fs/proc/array.c: set overflow flag in case of error
For now in task_name() we ignore the return code of string_escape_str()
call. This is not good if buffer suddenly becomes not big enough. Do the
proper error handling there.
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>
Diffstat (limited to 'fs/proc')
| -rw-r--r-- | fs/proc/array.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/fs/proc/array.c b/fs/proc/array.c index eed2050db9be..d73291f5f0fc 100644 --- a/fs/proc/array.c +++ b/fs/proc/array.c @@ -91,18 +91,18 @@ static inline void task_name(struct seq_file *m, struct task_struct *p) { char *buf; + size_t size; char tcomm[sizeof(p->comm)]; + int ret; get_task_comm(tcomm, p); seq_puts(m, "Name:\t"); - buf = m->buf + m->count; - /* Ignore error for now */ - buf += string_escape_str(tcomm, buf, m->size - m->count, - ESCAPE_SPACE | ESCAPE_SPECIAL, "\n\\"); + size = seq_get_buf(m, &buf); + ret = string_escape_str(tcomm, buf, size, ESCAPE_SPACE | ESCAPE_SPECIAL, "\n\\"); + seq_commit(m, ret < size ? ret : -1); - m->count = buf - m->buf; seq_putc(m, '\n'); } |