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authorRob Landley <rob@landley.net>2014-05-15 05:32:52 -0500
committerRob Landley <rob@landley.net>2014-05-15 05:32:52 -0500
commit08f2d7d333f1a52ad48bcdc1c2ec1387b9053784 (patch)
tree39b3c385b85881cfef3c8e371fe17fcbb9cb89d7 /toys/pending/sysctl.c
parente973d23094883ad66ec24247cb95dbe65db1324e (diff)
downloadtoybox-08f2d7d333f1a52ad48bcdc1c2ec1387b9053784.tar.gz
More sysctl cleanup: fix error message on nonexistent key, write path, and -p.
Diffstat (limited to 'toys/pending/sysctl.c')
-rw-r--r--toys/pending/sysctl.c35
1 files changed, 20 insertions, 15 deletions
diff --git a/toys/pending/sysctl.c b/toys/pending/sysctl.c
index 741b8aef..c83051c7 100644
--- a/toys/pending/sysctl.c
+++ b/toys/pending/sysctl.c
@@ -43,8 +43,9 @@ static void replace_char(char *str, char old, char new)
static void key_error(char *key)
{
- if (!(errno == ENOENT && (toys.optflags & FLAG_e)))
- perror_msg("key '%s'", key);
+ if (errno == ENOENT) {
+ if (!(toys.optflags & FLAG_e)) error_msg("unknown key '%s'", key);
+ } else perror_msg("key '%s'", key);
}
static int write_key(char *path, char *key, char *value)
@@ -89,23 +90,25 @@ static int do_show_keys(struct dirtree *dt)
return 0;
}
-// Read/write entries under a key
+// Read/write entries under a key. Accepts "key=value" in key if !value
static void process_key(char *key, char *value)
{
- char *path, *pattern = "%s/%s/%s";
+ char *path;
- if ((toys.optflags & FLAG_w) && !value && !strchr(key, '=')) {
+ if (!value) value = split_key(key);
+ if ((toys.optflags & FLAG_w) && !value) {
error_msg("'%s' not key=value");
return;
}
- path = xmprintf(pattern + 3*!value, "/proc/sys", key, value);
- value = split_key(path);
+ path = xmprintf("/proc/sys/%s", key);
replace_char(path, '.', '/');
// Note: failure to assign to a non-leaf node suppresses the display.
- if (!(value && (write_key(path, key, value) || (toys.optflags & FLAG_q))))
- dirtree_read(path, do_show_keys);
+ if (!(value && (!write_key(path, key, value) || (toys.optflags & FLAG_q)))) {
+ if (!access(path, R_OK)) dirtree_read(path, do_show_keys);
+ else key_error(key);
+ }
free(path);
}
@@ -119,26 +122,28 @@ void sysctl_main()
// read file
else if (toys.optflags & FLAG_p) {
FILE *fp = xfopen(*toys.optargs ? *toys.optargs : "/etc/sysctl.conf", "r");
- char *line = 0;
size_t len;
- for (;-1 != (len = getline(&line, &len, fp)); free(line), line = 0) {
- char *key = line, *val;
+ for (;;) {
+ char *line = 0, *key, *val;
+ if (-1 == (len = getline(&line, &len, fp))) break;
+ key = line;
while (isspace(*key)) key++;
if (*key == '#' || *key == ';' || !*key) continue;
+ while (len && isspace(line[len-1])) line[--len] = 0;
if (!(val = split_key(line))) {
- error_msg("'%s' not key=value");
+ error_msg("'%s' not key=value", line);
continue;
}
- // Trim whitespace off key and value
- while (len && isspace(line[len-1])) line[--len] = 0;
+ // Trim whitespace around =
len = (val-line)-1;
while (len && isspace(line[len-1])) line[--len] = 0;
while (isspace(*val)) val++;;
process_key(key, val);
+ free(line);
}
fclose(fp);