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busybox: add patches for vi and modutils

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Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
This commit is contained in:
Gustavo Zacarias 2015-01-15 09:29:58 -03:00 committed by Thomas Petazzoni
parent 4aad9515f1
commit 0071454eee
2 changed files with 262 additions and 0 deletions
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54
package/busybox/0003-vi.patch Normal file
View File

@ -0,0 +1,54 @@
Upstream http://busybox.net/downloads/fixes-1.23.0/busybox-1.23.0-vi.patch
post-release hotfix patch for vi crash when called without a filename.
Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
--- busybox-1.23.0/editors/vi.c
+++ busybox-1.23.0-vi/editors/vi.c
@@ -542,9 +542,6 @@ static void cookmode(void); // return to
static int mysleep(int);
static int readit(void); // read (maybe cursor) key from stdin
static int get_one_char(void); // read 1 char from stdin
-#if !ENABLE_FEATURE_VI_READONLY
-#define file_insert(fn, p, update_ro_status) file_insert(fn, p)
-#endif
// file_insert might reallocate text[]!
static int file_insert(const char *, char *, int);
static int file_write(char *, char *, char *);
@@ -1325,7 +1322,7 @@ static void colon(char *buf)
q = next_line(q);
{ // dance around potentially-reallocated text[]
uintptr_t ofs = q - text;
- size = file_insert(fn, q, /*update_ro:*/ 0);
+ size = file_insert(fn, q, 0);
q = text + ofs;
}
if (size < 0)
@@ -2905,7 +2902,7 @@ static char *get_input_line(const char *
}
// might reallocate text[]!
-static int file_insert(const char *fn, char *p, int update_ro_status)
+static int file_insert(const char *fn, char *p, int initial)
{
int cnt = -1;
int fd, size;
@@ -2918,7 +2915,8 @@ static int file_insert(const char *fn, c
fd = open(fn, O_RDONLY);
if (fd < 0) {
- status_line_bold_errno(fn);
+ if (!initial)
+ status_line_bold_errno(fn);
return cnt;
}
@@ -2946,7 +2944,7 @@ static int file_insert(const char *fn, c
close(fd);
#if ENABLE_FEATURE_VI_READONLY
- if (update_ro_status
+ if (initial
&& ((access(fn, W_OK) < 0) ||
/* root will always have access()
* so we check fileperms too */

208
package/busybox/0004-modprobe.patch Normal file
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@ -0,0 +1,208 @@
Upstream http://busybox.net/downloads/fixes-1.23.0/busybox-1.23.0-modprobe.patch
post-release hotfix patch for several modutils crashes/failures.
Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
--- busybox-1.23.0/modutils/depmod.c
+++ busybox-1.23.0-modprobe/modutils/depmod.c
@@ -51,7 +51,11 @@ static int FAST_FUNC parse_module(const
info->dnext = info->dprev = info;
info->name = xstrdup(fname + 2); /* skip "./" */
- info->modname = xstrdup(filename2modname(fname, modname));
+ info->modname = xstrdup(
+ filename2modname(
+ bb_get_last_path_component_nostrip(fname),
+ modname
+ ));
for (ptr = image; ptr < image + len - 10; ptr++) {
if (strncmp(ptr, "depends=", 8) == 0) {
char *u;
@@ -242,17 +246,18 @@ int depmod_main(int argc UNUSED_PARAM, c
if (!(option_mask32 & OPT_n))
xfreopen_write("modules.alias", stdout);
for (m = modules; m != NULL; m = m->next) {
+ char modname[MODULE_NAME_LEN];
const char *fname = bb_basename(m->name);
- int fnlen = strchrnul(fname, '.') - fname;
+ filename2modname(fname, modname);
while (m->aliases) {
/* Last word can well be m->modname instead,
* but depmod from module-init-tools 3.4
* uses module basename, i.e., no s/-/_/g.
* (pathname and .ko.* are still stripped)
* Mimicking that... */
- printf("alias %s %.*s\n",
+ printf("alias %s %s\n",
(char*)llist_pop(&m->aliases),
- fnlen, fname);
+ modname);
}
}
#endif
@@ -260,12 +265,13 @@ int depmod_main(int argc UNUSED_PARAM, c
if (!(option_mask32 & OPT_n))
xfreopen_write("modules.symbols", stdout);
for (m = modules; m != NULL; m = m->next) {
+ char modname[MODULE_NAME_LEN];
const char *fname = bb_basename(m->name);
- int fnlen = strchrnul(fname, '.') - fname;
+ filename2modname(fname, modname);
while (m->symbols) {
- printf("alias symbol:%s %.*s\n",
+ printf("alias symbol:%s %s\n",
(char*)llist_pop(&m->symbols),
- fnlen, fname);
+ modname);
}
}
#endif
--- busybox-1.23.0/modutils/modprobe.c
+++ busybox-1.23.0-modprobe/modutils/modprobe.c
@@ -229,26 +229,20 @@ static ALWAYS_INLINE struct module_entry
{
return helper_get_module(module, 1);
}
-static ALWAYS_INLINE struct module_entry *get_modentry(const char *module)
+/* So far this function always gets a module pathname, never an alias name.
+ * The crucial difference is that pathname needs dirname stripping,
+ * while alias name must NOT do it!
+ * Testcase where dirname stripping is likely to go wrong: "modprobe devname:snd/timer"
+ */
+static ALWAYS_INLINE struct module_entry *get_modentry(const char *pathname)
{
- return helper_get_module(module, 0);
+ return helper_get_module(bb_get_last_path_component_nostrip(pathname), 0);
}
static void add_probe(const char *name)
{
struct module_entry *m;
- /*
- * get_or_add_modentry() strips path from name and works
- * on remaining basename.
- * This would make "rmmod dir/name" and "modprobe dir/name"
- * to work like "rmmod name" and "modprobe name",
- * which is wrong, and can be abused via implicit modprobing:
- * "ifconfig /usbserial up" tries to modprobe netdev-/usbserial.
- */
- if (strchr(name, '/'))
- bb_error_msg_and_die("malformed module name '%s'", name);
-
m = get_or_add_modentry(name);
if (!(option_mask32 & (OPT_REMOVE | OPT_SHOW_DEPS))
&& (m->flags & MODULE_FLAG_LOADED)
@@ -510,7 +504,7 @@ static void load_modules_dep(void)
colon = last_char_is(tokens[0], ':');
if (colon == NULL)
continue;
- *colon = 0;
+ *colon = '\0';
m = get_modentry(tokens[0]);
if (m == NULL)
@@ -557,7 +551,6 @@ int modprobe_main(int argc UNUSED_PARAM,
if (opt & OPT_LIST_ONLY) {
int i;
- char name[MODULE_NAME_LEN];
char *colon, *tokens[2];
parser_t *p = config_open2(CONFIG_DEFAULT_DEPMOD_FILE, xfopen_for_read);
@@ -569,10 +562,14 @@ int modprobe_main(int argc UNUSED_PARAM,
if (!colon)
continue;
*colon = '\0';
- filename2modname(tokens[0], name);
if (!argv[0])
puts(tokens[0]);
else {
+ char name[MODULE_NAME_LEN];
+ filename2modname(
+ bb_get_last_path_component_nostrip(tokens[0]),
+ name
+ );
for (i = 0; argv[i]; i++) {
if (fnmatch(argv[i], name, 0) == 0) {
puts(tokens[0]);
--- busybox-1.23.0/modutils/modprobe-small.c
+++ busybox-1.23.0-modprobe/modutils/modprobe-small.c
@@ -149,9 +149,13 @@ static void replace(char *s, char what,
static char *filename2modname(const char *filename, char *modname)
{
int i;
- char *from;
+ const char *from;
- from = bb_get_last_path_component_nostrip(filename);
+ // Disabled since otherwise "modprobe dir/name" would work
+ // as if it is "modprobe name". It is unclear why
+ // 'basenamization' was here in the first place.
+ //from = bb_get_last_path_component_nostrip(filename);
+ from = filename;
for (i = 0; i < (MODULE_NAME_LEN-1) && from[i] != '\0' && from[i] != '.'; i++)
modname[i] = (from[i] == '-') ? '_' : from[i];
modname[i] = '\0';
@@ -631,6 +635,14 @@ static void process_module(char *name, c
infovec = find_alias(name);
}
+ if (!infovec) {
+ /* both dirscan and find_alias found nothing */
+ if (!is_rmmod && applet_name[0] != 'd') /* it wasn't rmmod or depmod */
+ bb_error_msg("module '%s' not found", name);
+//TODO: _and_die()? or should we continue (un)loading modules listed on cmdline?
+ goto ret;
+ }
+
/* There can be more than one module for the given alias. For example,
* "pci:v00008086d00007010sv00000000sd00000000bc01sc01i80" matches
* ata_piix because it has alias "pci:v00008086d00007010sv*sd*bc*sc*i*"
@@ -646,7 +658,8 @@ static void process_module(char *name, c
int r;
char modname[MODULE_NAME_LEN];
- filename2modname(info->pathname, modname);
+ filename2modname(
+ bb_get_last_path_component_nostrip(info->pathname), modname);
r = delete_module(modname, O_NONBLOCK | O_EXCL);
dbg1_error_msg("delete_module('%s', O_NONBLOCK | O_EXCL):%d", modname, r);
if (r != 0) {
@@ -669,14 +682,6 @@ static void process_module(char *name, c
*/
}
- if (!infovec) {
- /* both dirscan and find_alias found nothing */
- if (!is_rmmod && applet_name[0] != 'd') /* it wasn't rmmod or depmod */
- bb_error_msg("module '%s' not found", name);
-//TODO: _and_die()? or should we continue (un)loading modules listed on cmdline?
- goto ret;
- }
-
infoidx = 0;
while ((info = infovec[infoidx++]) != NULL) {
/* Iterate thru dependencies, trying to (un)load them */
--- busybox-1.23.0/modutils/modutils.c
+++ busybox-1.23.0-modprobe/modutils/modutils.c
@@ -48,13 +48,17 @@ int FAST_FUNC string_to_llist(char *stri
char* FAST_FUNC filename2modname(const char *filename, char *modname)
{
int i;
- char *from;
+ const char *from;
if (filename == NULL)
return NULL;
if (modname == NULL)
modname = xmalloc(MODULE_NAME_LEN);
- from = bb_get_last_path_component_nostrip(filename);
+ // Disabled since otherwise "modprobe dir/name" would work
+ // as if it is "modprobe name". It is unclear why
+ // 'basenamization' was here in the first place.
+ //from = bb_get_last_path_component_nostrip(filename);
+ from = filename;
for (i = 0; i < (MODULE_NAME_LEN-1) && from[i] != '\0' && from[i] != '.'; i++)
modname[i] = (from[i] == '-') ? '_' : from[i];
modname[i] = '\0';