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modprobe: correct exitcode handling and error messages with respect to -q

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function                                             old     new   delta
do_modprobe                                          319     339     +20
bb_delete_module                                      10      26     +16
moderror                                              62      71      +9
bb_init_module                                       112     119      +7
modprobe_main                                        488     494      +6
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 5/0 up/down: 58/0)               Total: 58 bytes

Signed-off-by: Gilles Espinasse <g.esp@free.fr>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2009-06-17 18:46:06 +02:00
parent a5bdbe1087
commit ee47f6e44f
3 changed files with 143 additions and 93 deletions
Download patch file Download diff file Expand all files Collapse all files

65
modutils/modutils.c
View file

@ -25,7 +25,7 @@ void FAST_FUNC replace(char *s, char what, char with)
}
}
char * FAST_FUNC replace_underscores(char *s)
char* FAST_FUNC replace_underscores(char *s)
{
replace(s, '-', '_');
return s;
@ -45,7 +45,7 @@ int FAST_FUNC string_to_llist(char *string, llist_t **llist, const char *delim)
return len;
}
char * FAST_FUNC filename2modname(const char *filename, char *modname)
char* FAST_FUNC filename2modname(const char *filename, char *modname)
{
int i;
char *from;
@ -62,24 +62,6 @@ char * FAST_FUNC filename2modname(const char *filename, char *modname)
return modname;
}
const char * FAST_FUNC moderror(int err)
{
switch (err) {
case -1:
return "no such module";
case ENOEXEC:
return "invalid module format";
case ENOENT:
return "unknown symbol in module, or unknown parameter";
case ESRCH:
return "module has wrong symbol version";
case ENOSYS:
return "kernel does not support requested operation";
default:
return strerror(err);
}
}
char * FAST_FUNC parse_cmdline_module_options(char **argv)
{
char *options;
@ -95,6 +77,11 @@ char * FAST_FUNC parse_cmdline_module_options(char **argv)
return options;
}
/* Return:
* 0 on success,
* -errno on open/read error,
* errno on init_module() error
*/
int FAST_FUNC bb_init_module(const char *filename, const char *options)
{
size_t len;
@ -104,6 +91,7 @@ int FAST_FUNC bb_init_module(const char *filename, const char *options)
if (!options)
options = "";
//TODO: audit bb_init_module_24 to match error code convention
#if ENABLE_FEATURE_2_4_MODULES
if (get_linux_version_code() < KERNEL_VERSION(2,6,0))
return bb_init_module_24(filename, options);
@ -111,19 +99,40 @@ int FAST_FUNC bb_init_module(const char *filename, const char *options)
/* Use the 2.6 way */
len = INT_MAX - 4095;
rc = ENOENT;
errno = ENOMEM; /* may be changed by e.g. open errors below */
image = xmalloc_open_zipped_read_close(filename, &len);
if (image) {
rc = 0;
if (init_module(image, len, options) != 0)
rc = errno;
free(image);
}
if (!image)
return -errno;
errno = 0;
init_module(image, len, options);
rc = errno;
free(image);
return rc;
}
int FAST_FUNC bb_delete_module(const char *module, unsigned int flags)
{
return delete_module(module, flags);
errno = 0;
delete_module(module, flags);
return errno;
}
const char* FAST_FUNC moderror(int err)
{
switch (err) {
case -1: /* btw: it's -EPERM */
return "no such module";
case ENOEXEC:
return "invalid module format";
case ENOENT:
return "unknown symbol in module, or unknown parameter";
case ESRCH:
return "module has wrong symbol version";
case ENOSYS:
return "kernel does not support requested operation";
}
if (err < 0) /* should always be */
err = -err;
return strerror(err);
}