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Diffstat (limited to 'toys/pending/modprobe.c')
-rw-r--r--toys/pending/modprobe.c69
1 files changed, 30 insertions, 39 deletions
diff --git a/toys/pending/modprobe.c b/toys/pending/modprobe.c
index 215ebf43..b8ef4824 100644
--- a/toys/pending/modprobe.c
+++ b/toys/pending/modprobe.c
@@ -34,6 +34,7 @@ GLOBALS(
char *cmdopts;
int nudeps;
uint8_t symreq;
+ void (*dbg)(char *format, ...);
)
/* Note: if "#define DBASE_SIZE" modified,
@@ -48,7 +49,6 @@ GLOBALS(
#define MOD_FNDDEPMOD 0x0004
#define MOD_NDDEPS 0x0008
-static void (*dbg)(char *format, ...);
// dummy interface for debugging.
static void dummy(char *format, ...)
{
@@ -64,27 +64,20 @@ struct module_s {
// Converts path name FILE to module name.
static char *path2mod(char *file, char *mod)
{
- int i;
- char *from, *lslash;
+ int i;
+ char *from, *lslash;
- if (!file) return NULL;
- if (!mod) mod = xmalloc(MODNAME_LEN);
+ if (!file) return NULL;
+ if (!mod) mod = xmalloc(MODNAME_LEN);
lslash = strrchr(file, '/');
if (!lslash || (lslash == file && !lslash[1])) from = file;
else from = lslash + 1;
for (i = 0; i < (MODNAME_LEN-1) && from[i] && from[i] != '.'; i++)
- mod[i] = (from[i] == '-') ? '_' : from[i];
- mod[i] = '\0';
- return mod;
-}
-
-// locate character in string.
-static char *strchr_nul(char *s, int c)
-{
- while(*s != '\0' && *s != c) s++;
- return (char*)s;
+ mod[i] = (from[i] == '-') ? '_' : from[i];
+ mod[i] = '\0';
+ return mod;
}
// Add options in opts from toadd.
@@ -303,7 +296,7 @@ static int depmode_read_entry(char *cmdname)
if (tmp) *tmp = '\0';
if (!cmdname || !fnmatch(cmdname, name, 0)) {
if (tmp) *tmp = '.';
- dbg("%s\n", line);
+ TT.dbg("%s\n", line);
ret = 0;
}
}
@@ -351,14 +344,15 @@ static void find_dep(void)
// Remove a module from the Linux Kernel. if !modules does auto remove.
static int rm_mod(char *modules, uint32_t flags)
{
- errno = 0;
if (modules) {
int len = strlen(modules);
- if (len > 3 && !strcmp(&modules[len-3], ".ko" )) modules[len-3] = 0;
+ if (len > 3 && !strcmp(modules+len-3, ".ko" )) modules[len-3] = 0;
}
- if (!flags) flags = O_NONBLOCK|O_EXCL;
- syscall(__NR_delete_module, modules, flags);
+
+ errno = 0;
+ syscall(__NR_delete_module, modules, flags ? flags : O_NONBLOCK|O_EXCL);
+
return errno;
}
@@ -390,10 +384,10 @@ static void add_mod(char *name)
struct module_s *mod = get_mod(name, 1);
if (!(toys.optflags & (FLAG_r | FLAG_D)) && (mod->flags & MOD_ALOADED)) {
- dbg("skipping %s, it is already loaded\n", name);
+ TT.dbg("skipping %s, it is already loaded\n", name);
return;
}
- dbg("queuing %s\n", name);
+ TT.dbg("queuing %s\n", name);
mod->cmdname = name;
mod->flags |= MOD_NDDEPS;
llist_add_tail(&TT.probes, mod);
@@ -414,11 +408,8 @@ static char *add_cmdopt(char **argv)
opt = xrealloc(opt, lopt + 2 + strlen(var) + 2);
// check for key=val or key = val.
fmt = "%.*s%s ";
- val = strchr_nul(var, '=');
- if (*val) {
- val++;
- if (strchr(val, ' ')) fmt = "%.*s\"%s\" ";
- }
+ for (val = var; *val && *val != '='; val++);
+ if (*val && strchr(++val, ' ')) fmt = "%.*s\"%s\" ";
lopt += sprintf(opt + lopt, fmt, (int) (val - var), var, val);
}
return opt;
@@ -434,7 +425,7 @@ static int go_probe(struct module_s *m)
error_msg("module %s not found in modules.dep", m->name);
return -ENOENT;
}
- dbg("go_prob'ing %s\n", m->name);
+ TT.dbg("go_prob'ing %s\n", m->name);
if (!(toys.optflags & FLAG_r)) m->dep = llist_rev(m->dep);
while (m->dep) {
@@ -463,18 +454,18 @@ static int go_probe(struct module_s *m)
// are we only checking dependencies ?
if (toys.optflags & FLAG_D) {
- dbg(options ? "insmod %s %s\n" : "insmod %s\n", fn, options);
+ TT.dbg(options ? "insmod %s %s\n" : "insmod %s\n", fn, options);
if (options) free(options);
continue;
}
if (m2->flags & MOD_ALOADED) {
- dbg("%s is already loaded, skipping\n", fn);
+ TT.dbg("%s is already loaded, skipping\n", fn);
if (options) free(options);
continue;
}
// none of above is true insert the module.
rc = ins_mod(fn, options);
- dbg("loaded %s '%s', rc:%d\n", fn, options, rc);
+ TT.dbg("loaded %s '%s', rc:%d\n", fn, options, rc);
if (rc == EEXIST) rc = 0;
if (options) free(options);
if (rc) {
@@ -494,17 +485,17 @@ void modprobe_main(void)
struct module_s *module;
unsigned flags = toys.optflags;
- dbg = dummy;
- if (flags & FLAG_v) dbg = xprintf;
+ TT.dbg = (flags & FLAG_v) ? xprintf : dummy;
if ((toys.optc < 1) && (((flags & FLAG_r) && (flags & FLAG_l))
- ||(!((flags & FLAG_r)||(flags & FLAG_l))))) {
+ ||(!((flags & FLAG_r)||(flags & FLAG_l)))))
+ {
toys.exithelp++;
error_exit("bad syntax");
}
// Check for -r flag without arg if yes then do auto remove.
- if ((flags & FLAG_r) && (!toys.optc)) {
- if (rm_mod(NULL, O_NONBLOCK | O_EXCL) != 0) perror_exit("rmmod");
+ if ((flags & FLAG_r) && !toys.optc) {
+ if (rm_mod(NULL, O_NONBLOCK | O_EXCL)) perror_exit("rmmod");
return;
}
@@ -537,7 +528,7 @@ void modprobe_main(void)
TT.cmdopts = add_cmdopt(argv);
}
if (!TT.probes) {
- dbg("All modules loaded\n");
+ TT.dbg("All modules loaded\n");
return;
}
dirtree_read("/etc/modprobe.conf", config_action);
@@ -547,7 +538,7 @@ void modprobe_main(void)
find_dep();
while ((module = llist_popme(&TT.probes))) {
if (!module->rnames) {
- dbg("probing by module name\n");
+ TT.dbg("probing by module name\n");
/* This is not an alias. Literal names are blacklisted
* only if '-b' is given.
*/
@@ -559,7 +550,7 @@ void modprobe_main(void)
char *real = ((struct arg_list*)llist_pop(&module->rnames))->arg;
struct module_s *m2 = get_mod(real, 0);
- dbg("probing alias %s by realname %s\n", module->name, real);
+ TT.dbg("probing alias %s by realname %s\n", module->name, real);
if (!m2) continue;
if (!(m2->flags & MOD_BLACKLIST)
&& (!(m2->flags & MOD_ALOADED) || (flags & (FLAG_r | FLAG_D))))
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-27 18:31:09 +0000