From: Maciej Żenczykowski <[email protected]>
Fixes: is_umdir_used - pid filename too long
pids are no longer limited to 16-bits, bump to 32-bits,
ie. 9 decimal characters. Additionally sizeof("/") already
returns 2 - ie. it already accounts for trailing zero.
Cc: Jeff Dike <[email protected]>
Cc: Richard Weinberger <[email protected]>
Cc: Anton Ivanov <[email protected]>
Cc: Linux UM Mailing List <[email protected]>
Signed-off-by: Maciej Żenczykowski <[email protected]>
---
arch/um/os-Linux/umid.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/arch/um/os-Linux/umid.c b/arch/um/os-Linux/umid.c
index 9e16078a4bf8..1d7558dac75f 100644
--- a/arch/um/os-Linux/umid.c
+++ b/arch/um/os-Linux/umid.c
@@ -97,7 +97,7 @@ static int remove_files_and_dir(char *dir)
while ((ent = readdir(directory)) != NULL) {
if (!strcmp(ent->d_name, ".") || !strcmp(ent->d_name, ".."))
continue;
- len = strlen(dir) + sizeof("/") + strlen(ent->d_name) + 1;
+ len = strlen(dir) + strlen("/") + strlen(ent->d_name) + 1;
if (len > sizeof(file)) {
ret = -E2BIG;
goto out;
@@ -135,7 +135,7 @@ static int remove_files_and_dir(char *dir)
*/
static inline int is_umdir_used(char *dir)
{
- char pid[sizeof("nnnnn\0")], *end, *file;
+ char pid[sizeof("nnnnnnnnn")], *end, *file;
int dead, fd, p, n, err;
size_t filelen;
@@ -217,10 +217,10 @@ static int umdir_take_if_dead(char *dir)
static void __init create_pid_file(void)
{
- char pid[sizeof("nnnnn\0")], *file;
+ char pid[sizeof("nnnnnnnnn")], *file;
int fd, n;
- n = strlen(uml_dir) + UMID_LEN + sizeof("/pid\0");
+ n = strlen(uml_dir) + UMID_LEN + sizeof("/pid");
file = malloc(n);
if (!file)
return;
--
2.28.0.236.gb10cc79966-goog