main: corrected do_switch_root()

[elogind.git] / src / shared / util.c

diff --git a/src/shared/util.c b/src/shared/util.c
index c9899fb932d239e618286c1b5e1e81b43df97c5d..53185403d62d8e762682d1f7b499e04904fd15c1 100644 (file)
--- a/src/shared/util.c
+++ b/src/shared/util.c
@@ -597,7 +597,8 @@ int write_one_line_file(const char *fn, const char *line) {
         assert(fn);
         assert(line);
 
-        if (!(f = fopen(fn, "we")))
+        f = fopen(fn, "we");
+        if (!f)
                 return -errno;
 
         errno = 0;
@@ -2948,12 +2949,20 @@ char* gethostname_malloc(void) {
 
         assert_se(uname(&u) >= 0);
 
-        if (u.nodename[0])
+        if (!isempty(u.nodename) && !streq(u.nodename, "(none)"))
                 return strdup(u.nodename);
 
         return strdup(u.sysname);
 }
 
+bool hostname_is_set(void) {
+        struct utsname u;
+
+        assert_se(uname(&u) >= 0);
+
+        return !isempty(u.nodename) && !streq(u.nodename, "(none)");
+}
+
 char* getlogname_malloc(void) {
         uid_t uid;
         long bufsize;
@@ -3130,7 +3139,7 @@ int get_ctty(pid_t pid, dev_t *_devnr, char **r) {
         return 0;
 }
 
-static int rm_rf_children(int fd, bool only_dirs, bool honour_sticky) {
+int rm_rf_children(int fd, bool only_dirs, bool honour_sticky) {
         DIR *d;
         int ret = 0;
 
@@ -3329,15 +3338,15 @@ cpu_set_t* cpu_set_malloc(unsigned *ncpus) {
 }
 
 void status_vprintf(const char *status, bool ellipse, const char *format, va_list ap) {
-        char *s = NULL, *spaces = NULL, *e;
-        int fd = -1, c;
-        size_t emax, sl, left;
+        char *s = NULL;
+        static const char status_indent[] = "         "; /* "[" STATUS "] " */
+        int fd = -1;
         struct iovec iovec[5];
         int n = 0;
 
         assert(format);
 
-        /* This independent of logging, as status messages are
+        /* This is independent of logging, as status messages are
          * optional and go exclusively to the console. */
 
         if (vasprintf(&s, format, ap) < 0)
@@ -3348,15 +3357,19 @@ void status_vprintf(const char *status, bool ellipse, const char *format, va_lis
                 goto finish;
 
         if (ellipse) {
+                char *e;
+                size_t emax, sl;
+                int c;
+
                 c = fd_columns(fd);
                 if (c <= 0)
                         c = 80;
 
-                if (status) {
-                        sl = 2 + 6 + 1; /* " [" status "]" */
-                        emax = (size_t) c > sl ? c - sl - 1 : 0;
-                } else
-                        emax = c - 1;
+                sl = status ? strlen(status_indent) : 0;
+
+                emax = c - sl - 1;
+                if (emax < 3)
+                        emax = 3;
 
                 e = ellipsize(s, emax, 75);
                 if (e) {
@@ -3366,34 +3379,23 @@ void status_vprintf(const char *status, bool ellipse, const char *format, va_lis
         }
 
         zero(iovec);
-        IOVEC_SET_STRING(iovec[n++], s);
 
-        if (ellipse) {
-                sl = strlen(s);
-                left = emax > sl ? emax - sl : 0;
-                if (left > 0) {
-                        spaces = malloc(left);
-                        if (spaces) {
-                                memset(spaces, ' ', left);
-                                iovec[n].iov_base = spaces;
-                                iovec[n].iov_len = left;
-                                n++;
-                        }
-                }
+        if (status) {
+                if (!isempty(status)) {
+                        IOVEC_SET_STRING(iovec[n++], "[");
+                        IOVEC_SET_STRING(iovec[n++], status);
+                        IOVEC_SET_STRING(iovec[n++], "] ");
+                } else
+                        IOVEC_SET_STRING(iovec[n++], status_indent);
         }
 
-        if (status) {
-                IOVEC_SET_STRING(iovec[n++], " [");
-                IOVEC_SET_STRING(iovec[n++], status);
-                IOVEC_SET_STRING(iovec[n++], "]\n");
-        } else
-                IOVEC_SET_STRING(iovec[n++], "\n");
+        IOVEC_SET_STRING(iovec[n++], s);
+        IOVEC_SET_STRING(iovec[n++], "\n");
 
         writev(fd, iovec, n);
 
 finish:
         free(s);
-        free(spaces);
 
         if (fd >= 0)
                 close_nointr_nofail(fd);
@@ -5616,3 +5618,24 @@ int can_sleep(const char *type) {
         free(p);
         return found;
 }
+
+bool is_valid_documentation_url(const char *url) {
+        assert(url);
+
+        if (startswith(url, "http://") && url[7])
+                return true;
+
+        if (startswith(url, "https://") && url[8])
+                return true;
+
+        if (startswith(url, "file:") && url[5])
+                return true;
+
+        if (startswith(url, "info:") && url[5])
+                return true;
+
+        if (startswith(url, "man:") && url[4])
+                return true;
+
+        return false;
+}