make sysctl/kernel/core_pattern and fs/exec.c agree on maximum core filename size
Make sysctl/kernel/core_pattern and fs/exec.c agree on maximum core
filename size and change it to 128, so that extensive patterns such as
'/local/cores/%e-%h-%s-%t-%p.core' won't result in truncated filename
generation.
Signed-off-by: Dan Aloni <da-x@monatomic.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/fs/exec.c b/fs/exec.c
index 70fa365..0b68588 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -60,7 +60,7 @@
#endif
int core_uses_pid;
-char core_pattern[128] = "core";
+char core_pattern[CORENAME_MAX_SIZE] = "core";
int suid_dumpable = 0;
EXPORT_SYMBOL(suid_dumpable);
@@ -1264,8 +1264,6 @@
EXPORT_SYMBOL(set_binfmt);
-#define CORENAME_MAX_SIZE 64
-
/* format_corename will inspect the pattern parameter, and output a
* name into corename, which must have space for at least
* CORENAME_MAX_SIZE bytes plus one byte for the zero terminator.
diff --git a/include/linux/binfmts.h b/include/linux/binfmts.h
index 2d956cd..e1a7083 100644
--- a/include/linux/binfmts.h
+++ b/include/linux/binfmts.h
@@ -17,6 +17,8 @@
#ifdef __KERNEL__
+#define CORENAME_MAX_SIZE 128
+
/*
* This structure is used to hold the arguments that are used when loading binaries.
*/
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 4073353..30ee462 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -227,7 +227,7 @@
.ctl_name = KERN_CORE_PATTERN,
.procname = "core_pattern",
.data = core_pattern,
- .maxlen = 128,
+ .maxlen = CORENAME_MAX_SIZE,
.mode = 0644,
.proc_handler = &proc_dostring,
.strategy = &sysctl_string,