aboutsummaryrefslogtreecommitdiff
path: root/toys/other/modinfo.c
diff options
context:
space:
mode:
Diffstat (limited to 'toys/other/modinfo.c')
-rw-r--r--toys/other/modinfo.c62
1 files changed, 29 insertions, 33 deletions
diff --git a/toys/other/modinfo.c b/toys/other/modinfo.c
index 77be2d42..3548247d 100644
--- a/toys/other/modinfo.c
+++ b/toys/other/modinfo.c
@@ -20,40 +20,34 @@ GLOBALS(
long mod;
)
-static char *modinfo_tags[] = {
- "alias", "license", "description", "author", "firmware",
- "vermagic", "srcversion", "intree", "parm", "depends",
-};
-
static void output_field(char *field, char *value)
{
- int len;
-
- if (TT.field && strcmp(TT.field, field)) return;
-
- len = strlen(field);
-
- if (TT.field) xprintf("%s", value);
- else xprintf("%s:%*s%s", field, 15 - len, "", value);
+ if (!TT.field) xprintf("%s:%*c", field, 15 - strlen(field), ' ');
+ else if (!strcmp(TT.field, field)) return;
+ xprintf("%s", value);
xputc((toys.optflags & FLAG_0) ? 0 : '\n');
}
-static int modinfo_file(struct dirtree *dir)
+static void modinfo_file(char *full_name)
{
int fd, len, i;
- char *buf, *pos, *full_name;
-
- full_name = dirtree_path(dir, NULL);
- output_field("filename", full_name);
- fd = xopen(full_name, O_RDONLY);
- free(full_name);
+ char *buf = 0, *pos, *modinfo_tags[] = {
+ "alias", "license", "description", "author", "firmware",
+ "vermagic", "srcversion", "intree", "parm", "depends",
+ };
+
+ if (-1 != (fd = open(full_name, O_RDONLY))) {
+ len = fdlength(fd);
+ if (!(buf = mmap(0, len, PROT_READ, MAP_SHARED, fd, 0))) close(fd);
+ }
- len = fdlength(fd);
- if (!(buf = mmap(0, len, PROT_READ, MAP_SHARED, fd, 0))) {
- perror_msg("mmap %s", full_name);
- return 1;
+ if (!buf) {
+ perror_msg("%s", full_name);
+ return;
}
+ output_field("filename", full_name);
+
for (pos = buf; pos < buf+len; pos++) {
if (*pos) continue;
@@ -68,7 +62,6 @@ static int modinfo_file(struct dirtree *dir)
munmap(buf, len);
close(fd);
- return 0;
}
static int check_module(struct dirtree *new)
@@ -87,7 +80,10 @@ static int check_module(struct dirtree *new)
}
if (s[len] || strcmp(new->name+len, ".ko")) break;
- modinfo_file(new);
+ modinfo_file(s = dirtree_path(new, NULL));
+ free(s);
+
+ return DIRTREE_ABORT;
}
}
@@ -96,15 +92,15 @@ static int check_module(struct dirtree *new)
void modinfo_main(void)
{
- struct utsname uts;
+ for(TT.mod = 0; TT.mod<toys.optc; TT.mod++) {
+ char *s = strstr(toys.optargs[TT.mod], ".ko");
- if (uname(&uts) < 0) perror_exit("bad uname");
- sprintf(toybuf, "/lib/modules/%s", uts.release);
+ if (s && !s[3]) modinfo_file(toys.optargs[TT.mod]);
+ else {
+ struct utsname uts;
- for(TT.mod = 0; TT.mod<toys.optc; TT.mod++) {
- if (strstr(toys.optargs[TT.mod], ".ko")) {
- dirtree_read(toys.optargs[TT.mod], modinfo_file);
- } else {
+ if (uname(&uts) < 0) perror_exit("bad uname");
+ sprintf(toybuf, "/lib/modules/%s", uts.release);
dirtree_read(toybuf, check_module);
}
}