"goto end" should not bypass the "Backward compatibility with
core_uses_pid" code, move this label up.
While at it,
- It is ugly to copy '|' into cn->corename and then inc
the pointer for argv_split().
Change format_corename() to increment pat_ptr instead.
- Remove the dead "if (*pat_ptr == 0)" in format_corename(),
we already checked it is not zero.
Signed-off-by: Oleg Nesterov <o...@redhat.com>
---
fs/coredump.c | 11 ++++++-----
1 files changed, 6 insertions(+), 5 deletions(-)
diff --git a/fs/coredump.c b/fs/coredump.c
index 10ba96a..a2ace9f 100644
--- a/fs/coredump.c
+++ b/fs/coredump.c
@@ -166,12 +166,13 @@ static int format_corename(struct core_name *cn, struct
coredump_params *cprm)
if (expand_corename(cn, core_name_size))
return -ENOMEM;
+ if (ispipe)
+ ++pat_ptr;
+
/* Repeat as long as we have more pattern to process and more output
space */
while (*pat_ptr) {
if (*pat_ptr != '%') {
- if (*pat_ptr == 0)
- goto out;
err = cn_printf(cn, "%c", *pat_ptr++);
} else {
switch (*++pat_ptr) {
@@ -240,6 +241,7 @@ static int format_corename(struct core_name *cn, struct
coredump_params *cprm)
return err;
}
+out:
/* Backward compatibility with core_uses_pid:
*
* If core_pattern does not include a %p (as is the default)
@@ -250,7 +252,6 @@ static int format_corename(struct core_name *cn, struct
coredump_params *cprm)
if (err)
return err;
}
-out:
return ispipe;
}
@@ -580,7 +581,7 @@ void do_coredump(siginfo_t *siginfo)
goto fail_dropcount;
}
- helper_argv = argv_split(GFP_KERNEL, cn.corename+1, NULL);
+ helper_argv = argv_split(GFP_KERNEL, cn.corename, NULL);
if (!helper_argv) {
printk(KERN_WARNING "%s failed to allocate memory\n",
__func__);
@@ -597,7 +598,7 @@ void do_coredump(siginfo_t *siginfo)
argv_free(helper_argv);
if (retval) {
- printk(KERN_INFO "Core dump to %s pipe failed\n",
+ printk(KERN_INFO "Core dump to |%s pipe failed\n",
cn.corename);
goto close_fail;
}
--
1.5.5.1
--
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