Jan Engelhardt
38e2a9611a
Refresh the parallel patch. OBS-URL: https://build.opensuse.org/request/show/656939 OBS-URL: https://build.opensuse.org/package/show/Base:System/kmod?expand=0&rev=153
108 lines
3.0 KiB
Diff
108 lines
3.0 KiB
Diff
From af9a6e3754b6fa4e5cefb70aa6621b2f52ca94f1 Mon Sep 17 00:00:00 2001
|
|
From: Michal Suchanek <msuchanek@suse.de>
|
|
Date: Mon, 10 Dec 2018 16:36:03 +0100
|
|
Subject: [PATCH] depmod: shut up gcc insufficinet buffer warning.
|
|
|
|
In a couple of places depmod concatenates the module directory and filename
|
|
with snprintf. This can technically overflow creating an unterminated string if
|
|
module directory name is long. Use openat instead as is done elsewhere in
|
|
depmod. This avoids the snprintf, the extra buffer on stack, and the gcc
|
|
warning. It may even fix a corner case when the module direcotry name is just
|
|
under PATH_MAX.
|
|
|
|
Signed-off-by: Michal Suchanek <msuchanek@suse.de>
|
|
---
|
|
tools/depmod.c | 51 ++++++++++++++++++++++++++++++++++----------------
|
|
1 file changed, 35 insertions(+), 16 deletions(-)
|
|
|
|
diff --git a/tools/depmod.c b/tools/depmod.c
|
|
index 3b6d16e76160..6fca30a2f3e2 100644
|
|
--- a/tools/depmod.c
|
|
+++ b/tools/depmod.c
|
|
@@ -1389,19 +1389,42 @@ static int depmod_modules_build_array(struct depmod *depmod)
|
|
return 0;
|
|
}
|
|
|
|
+static FILE * dfdopen(const char * dname, const char * filename, int flags, const char * mode)
|
|
+ {
|
|
+ int fd, dfd;
|
|
+ FILE * ret;
|
|
+
|
|
+ dfd = open(dname, flags);
|
|
+ if (dfd < 0) {
|
|
+ WRN("could not open directory %s: %m\n", dname);
|
|
+ return NULL;
|
|
+ }
|
|
+
|
|
+ fd = openat(dfd, filename, flags);
|
|
+ if (fd < 0) {
|
|
+ WRN("could not open %s at %s: %m\n", filename, dname);
|
|
+ ret = NULL;
|
|
+ } else {
|
|
+ ret = fdopen(fd, mode);
|
|
+ if (!ret)
|
|
+ WRN("could not associate stream with %s: %m\n", filename);
|
|
+ }
|
|
+ close(dfd);
|
|
+ return ret;
|
|
+}
|
|
+
|
|
+
|
|
+
|
|
static void depmod_modules_sort(struct depmod *depmod)
|
|
{
|
|
- char order_file[PATH_MAX], line[PATH_MAX];
|
|
+ char line[PATH_MAX];
|
|
+ const char * order_file = "modules.order";
|
|
FILE *fp;
|
|
unsigned idx = 0, total = 0;
|
|
|
|
- snprintf(order_file, sizeof(order_file), "%s/modules.order",
|
|
- depmod->cfg->dirname);
|
|
- fp = fopen(order_file, "r");
|
|
- if (fp == NULL) {
|
|
- WRN("could not open %s: %m\n", order_file);
|
|
+ fp = dfdopen(depmod->cfg->dirname, order_file, O_RDONLY, "r");
|
|
+ if (fp == NULL)
|
|
return;
|
|
- }
|
|
|
|
while (fgets(line, sizeof(line), fp) != NULL) {
|
|
size_t len = strlen(line);
|
|
@@ -1409,8 +1432,8 @@ static void depmod_modules_sort(struct depmod *depmod)
|
|
if (len == 0)
|
|
continue;
|
|
if (line[len - 1] != '\n') {
|
|
- ERR("%s:%u corrupted line misses '\\n'\n",
|
|
- order_file, idx);
|
|
+ ERR("%s/%s:%u corrupted line misses '\\n'\n",
|
|
+ depmod->cfg->dirname, order_file, idx);
|
|
goto corrupted;
|
|
}
|
|
}
|
|
@@ -2287,18 +2310,14 @@ static int output_builtin_bin(struct depmod *depmod, FILE *out)
|
|
{
|
|
FILE *in;
|
|
struct index_node *idx;
|
|
- char infile[PATH_MAX], line[PATH_MAX], modname[PATH_MAX];
|
|
+ char line[PATH_MAX], modname[PATH_MAX];
|
|
|
|
if (out == stdout)
|
|
return 0;
|
|
|
|
- snprintf(infile, sizeof(infile), "%s/modules.builtin",
|
|
- depmod->cfg->dirname);
|
|
- in = fopen(infile, "r");
|
|
- if (in == NULL) {
|
|
- WRN("could not open %s: %m\n", infile);
|
|
+ in = dfdopen(depmod->cfg->dirname, "modules.builtin", O_RDONLY, "r");
|
|
+ if (in == NULL)
|
|
return 0;
|
|
- }
|
|
|
|
idx = index_create();
|
|
if (idx == NULL) {
|
|
--
|
|
2.19.2
|
|
|