Hi Lucas,
Thank you for review.
24.11.2012 01:00, Lucas De Marchi пишет:
I don't like the strstr loop above. We could either
1) check the extensions similarly to what depmod does
2) rely on user passing "--" for module names. This was my preferred
from the beginning but this could break current users.
I think (1) could be very simple.
From 94a0a34073899244fc3f666ef0ff5d22ad39f0ec Mon Sep 17 00:00:00 2001
From: Aleksey Makarov <[email protected]>
Date: Sat, 24 Nov 2012 18:55:13 +0700
Subject: [PATCH] fix is_module_filename()
modinfo fails if there is a ".ko" substring in the path to the module
---
libkmod/libkmod-util.c | 25 +++++++++++++++++++++++++
libkmod/libkmod-util.h | 8 ++++++++
tools/depmod.c | 40 ++--------------------------------------
tools/modinfo.c | 10 ++--------
4 files changed, 37 insertions(+), 46 deletions(-)
diff --git a/libkmod/libkmod-util.c b/libkmod/libkmod-util.c
index b5a2588..05a26cc 100644
--- a/libkmod/libkmod-util.c
+++ b/libkmod/libkmod-util.c
@@ -308,6 +308,31 @@ char *path_make_absolute_cwd(const char *p)
return r;
}
+const struct kmod_ext kmod_exts[] = {
+ {".ko", sizeof(".ko") - 1},
+#ifdef ENABLE_ZLIB
+ {".ko.gz", sizeof(".ko.gz") - 1},
+#endif
+#ifdef ENABLE_XZ
+ {".ko.xz", sizeof(".ko.xz") - 1},
+#endif
+ {NULL, 0},
+};
+
+int path_ends_with_kmod_ext(const char *path, size_t len)
+{
+ const struct kmod_ext *eitr;
+
+ for (eitr = kmod_exts; eitr->ext != NULL; eitr++) {
+ if (len <= eitr->len)
+ continue;
+ if (streq(path + len - eitr->len, eitr->ext))
+ return true;
+ }
+
+ return false;
+}
+
#define USEC_PER_SEC 1000000ULL
#define NSEC_PER_USEC 1000ULL
unsigned long long ts_usec(const struct timespec *ts)
diff --git a/libkmod/libkmod-util.h b/libkmod/libkmod-util.h
index 5fe3e02..36192d9 100644
--- a/libkmod/libkmod-util.h
+++ b/libkmod/libkmod-util.h
@@ -22,6 +22,14 @@ char *path_make_absolute_cwd(const char *p) _must_check_
__attribute__((nonnull(
int alias_normalize(const char *alias, char buf[PATH_MAX], size_t *len)
_must_check_ __attribute__((nonnull(1,2)));
char *modname_normalize(const char *modname, char buf[PATH_MAX], size_t *len)
__attribute__((nonnull(1, 2)));
char *path_to_modname(const char *path, char buf[PATH_MAX], size_t *len)
__attribute__((nonnull(2)));
+
+extern const struct kmod_ext {
+ const char *ext;
+ size_t len;
+} kmod_exts[];
+#define KMOD_EXT_UNC 0
+int path_ends_with_kmod_ext(const char *path, size_t len)
__attribute__((nonnull(1)));
+
unsigned long long stat_mstamp(const struct stat *st);
unsigned long long ts_usec(const struct timespec *ts);
diff --git a/tools/depmod.c b/tools/depmod.c
index 7bbdcd3..de77391 100644
--- a/tools/depmod.c
+++ b/tools/depmod.c
@@ -40,22 +40,6 @@
#define DEFAULT_VERBOSE LOG_WARNING
static int verbose = DEFAULT_VERBOSE;
-#define KMOD_EXT_UNC 0
-
-static const struct kmod_ext {
- const char *ext;
- size_t len;
-} kmod_exts[] = {
- {".ko", sizeof(".ko") - 1},
-#ifdef ENABLE_ZLIB
- {".ko.gz", sizeof(".ko.gz") - 1},
-#endif
-#ifdef ENABLE_XZ
- {".ko.xz", sizeof(".ko.xz") - 1},
-#endif
- {NULL, 0},
-};
-
static const char CFG_BUILTIN_KEY[] = "built-in";
static const char *default_cfg_paths[] = {
"/run/depmod.d",
@@ -1204,20 +1188,10 @@ static int depmod_modules_search_file(struct depmod
*depmod, size_t baselen, siz
struct mod *mod;
const char *relpath;
char modname[PATH_MAX];
- const struct kmod_ext *eitr;
size_t modnamelen;
- uint8_t matches = 0;
int err;
- for (eitr = kmod_exts; eitr->ext != NULL; eitr++) {
- if (namelen <= eitr->len)
- continue;
- if (streq(path + baselen + namelen - eitr->len, eitr->ext)) {
- matches = 1;
- break;
- }
- }
- if (!matches)
+ if (!path_ends_with_kmod_ext(path, baselen + namelen))
return 0;
if (path_to_modname(path, modname, &modnamelen) == NULL) {
@@ -2413,17 +2387,7 @@ static int depfile_up_to_date_dir(DIR *d, time_t mtime,
size_t baselen, char *pa
path);
closedir(subdir);
} else if (S_ISREG(st.st_mode)) {
- const struct kmod_ext *eitr;
- uint8_t matches = 0;
- for (eitr = kmod_exts; eitr->ext != NULL; eitr++) {
- if (namelen <= eitr->len)
- continue;
- if (streq(name + namelen - eitr->len,
eitr->ext)) {
- matches = 1;
- break;
- }
- }
- if (!matches)
+ if (!path_ends_with_kmod_ext(path, namelen))
continue;
memcpy(path + baselen, name, namelen + 1);
err = st.st_mtime <= mtime;
diff --git a/tools/modinfo.c b/tools/modinfo.c
index aec2608..17ed50d 100644
--- a/tools/modinfo.c
+++ b/tools/modinfo.c
@@ -27,6 +27,7 @@
#include <sys/utsname.h>
#include <sys/stat.h>
#include "libkmod.h"
+#include "libkmod-util.h"
#include "kmod.h"
@@ -347,17 +348,10 @@ static void help(void)
static bool is_module_filename(const char *name)
{
struct stat st;
- const char *ptr;
if (stat(name, &st) == 0 && S_ISREG(st.st_mode) &&
- (ptr = strstr(name, ".ko")) != NULL) {
- /*
- * We screened for .ko; make sure this is either at the end of
- * the name or followed by another '.' (e.g. gz or xz modules)
- */
- if(ptr[3] == '\0' || ptr[3] == '.')
+ path_ends_with_kmod_ext(name, strlen(name)))
return true;
- }
return false;
}
--
1.8.0
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