shutdown: during final killing spree also send SIGHUP in addition to SIGTERM to deal...

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

diff --git a/src/shared/util.c b/src/shared/util.c
index e18421e5207dd656168641570d800e2e5a18adce..3a4d1965ae314788152999d7d518186744ad2601 100644 (file)
--- a/src/shared/util.c
+++ b/src/shared/util.c
@@ -41,7 +41,6 @@
 #include <stdarg.h>
 #include <sys/inotify.h>
 #include <sys/poll.h>
-#include <libgen.h>
 #include <ctype.h>
 #include <sys/prctl.h>
 #include <sys/utsname.h>
@@ -76,6 +75,8 @@
 #include "device-nodes.h"
 #include "utf8.h"
 #include "gunicode.h"
+#include "virt.h"
+#include "def.h"
 
 int saved_argc = 0;
 char **saved_argv = NULL;
@@ -643,7 +644,7 @@ int get_process_cmdline(pid_t pid, size_t max_length, bool comm_fallback, char *
 
         /* Kernel threads have no argv[] */
         if (r == NULL || r[0] == 0) {
-                char *t;
+                _cleanup_free_ char *t = NULL;
                 int h;
 
                 free(r);
@@ -656,8 +657,6 @@ int get_process_cmdline(pid_t pid, size_t max_length, bool comm_fallback, char *
                         return h;
 
                 r = strjoin("[", t, "]", NULL);
-                free(t);
-
                 if (!r)
                         return -ENOMEM;
         }
@@ -1357,78 +1356,6 @@ char *xescape(const char *s, const char *bad) {
         return r;
 }
 
-char *bus_path_escape(const char *s) {
-        char *r, *t;
-        const char *f;
-
-        assert(s);
-
-        /* Escapes all chars that D-Bus' object path cannot deal
-         * with. Can be reverse with bus_path_unescape(). We special
-         * case the empty string. */
-
-        if (*s == 0)
-                return strdup("_");
-
-        r = new(char, strlen(s)*3 + 1);
-        if (!r)
-                return NULL;
-
-        for (f = s, t = r; *f; f++) {
-
-                /* Escape everything that is not a-zA-Z0-9. We also
-                 * escape 0-9 if it's the first character */
-
-                if (!(*f >= 'A' && *f <= 'Z') &&
-                    !(*f >= 'a' && *f <= 'z') &&
-                    !(f > s && *f >= '0' && *f <= '9')) {
-                        *(t++) = '_';
-                        *(t++) = hexchar(*f >> 4);
-                        *(t++) = hexchar(*f);
-                } else
-                        *(t++) = *f;
-        }
-
-        *t = 0;
-
-        return r;
-}
-
-char *bus_path_unescape(const char *f) {
-        char *r, *t;
-
-        assert(f);
-
-        /* Special case for the empty string */
-        if (streq(f, "_"))
-                return strdup("");
-
-        r = new(char, strlen(f) + 1);
-        if (!r)
-                return NULL;
-
-        for (t = r; *f; f++) {
-
-                if (*f == '_') {
-                        int a, b;
-
-                        if ((a = unhexchar(f[1])) < 0 ||
-                            (b = unhexchar(f[2])) < 0) {
-                                /* Invalid escape code, let's take it literal then */
-                                *(t++) = '_';
-                        } else {
-                                *(t++) = (char) ((a << 4) | b);
-                                f += 2;
-                        }
-                } else
-                        *(t++) = *f;
-        }
-
-        *t = 0;
-
-        return r;
-}
-
 char *ascii_strlower(char *t) {
         char *p;
 
@@ -2598,10 +2525,8 @@ int get_ctty_devnr(pid_t pid, dev_t *d) {
         char line[LINE_MAX], *p;
         unsigned long ttynr;
         const char *fn;
-        int k;
 
         assert(pid >= 0);
-        assert(d);
 
         if (pid == 0)
                 fn = "/proc/self/stat";
@@ -2612,10 +2537,8 @@ int get_ctty_devnr(pid_t pid, dev_t *d) {
         if (!f)
                 return -errno;
 
-        if (!fgets(line, sizeof(line), f)) {
-                k = feof(f) ? -EIO : -errno;
-                return k;
-        }
+        if (!fgets(line, sizeof(line), f))
+                return feof(f) ? -EIO : -errno;
 
         p = strrchr(line, ')');
         if (!p)
@@ -2635,7 +2558,9 @@ int get_ctty_devnr(pid_t pid, dev_t *d) {
         if (major(ttynr) == 0 && minor(ttynr) == 0)
                 return -ENOENT;
 
-        *d = (dev_t) ttynr;
+        if (d)
+                *d = (dev_t) ttynr;
+
         return 0;
 }
 
@@ -2925,11 +2850,13 @@ int fchmod_and_fchown(int fd, mode_t mode, uid_t uid, gid_t gid) {
          * first change the access mode and only then hand out
          * ownership to avoid a window where access is too open. */
 
-        if (fchmod(fd, mode) < 0)
-                return -errno;
+        if (mode != (mode_t) -1)
+                if (fchmod(fd, mode) < 0)
+                        return -errno;
 
-        if (fchown(fd, uid, gid) < 0)
-                return -errno;
+        if (uid != (uid_t) -1 || gid != (gid_t) -1)
+                if (fchown(fd, uid, gid) < 0)
+                        return -errno;
 
         return 0;
 }
@@ -3041,13 +2968,14 @@ int status_printf(const char *status, bool ellipse, bool ephemeral, const char *
 }
 
 int status_welcome(void) {
-        int r;
         _cleanup_free_ char *pretty_name = NULL, *ansi_color = NULL;
+        int r;
 
         r = parse_env_file("/etc/os-release", NEWLINE,
                            "PRETTY_NAME", &pretty_name,
                            "ANSI_COLOR", &ansi_color,
                            NULL);
+
         if (r < 0 && r != -ENOENT)
                 log_warning("Failed to read /etc/os-release: %s", strerror(-r));
 
@@ -3697,12 +3625,21 @@ char *resolve_dev_console(char **active) {
         else
                 tty = *active;
 
+        if (streq(tty, "tty0")) {
+                char *tmp;
+
+                /* Get the active VC (e.g. tty1) */
+                if (read_one_line_file("/sys/class/tty/tty0/active", &tmp) >= 0) {
+                        free(*active);
+                        tty = *active = tmp;
+                }
+        }
+
         return tty;
 }
 
 bool tty_is_vc_resolve(const char *tty) {
-        char *active = NULL;
-        bool b;
+        _cleanup_free_ char *active = NULL;
 
         assert(tty);
 
@@ -3715,10 +3652,7 @@ bool tty_is_vc_resolve(const char *tty) {
                         return false;
         }
 
-        b = tty_is_vc(tty);
-        free(active);
-
-        return b;
+        return tty_is_vc(tty);
 }
 
 const char *default_term_for_tty(const char *tty) {
@@ -4463,7 +4397,7 @@ int glob_extend(char ***strv, const char *path) {
         char **p;
 
         errno = 0;
-        k = glob(optarg, GLOB_NOSORT|GLOB_BRACE, NULL, &g);
+        k = glob(path, GLOB_NOSORT|GLOB_BRACE, NULL, &g);
 
         if (k == GLOB_NOMATCH)
                 return -ENOENT;
@@ -5467,6 +5401,7 @@ const char *draw_special_char(DrawSpecialChar ch) {
                         [DRAW_TREE_RIGHT]         = "\342\224\224\342\224\200", /* └─ */
                         [DRAW_TREE_SPACE]         = "  ",                       /*    */
                         [DRAW_TRIANGULAR_BULLET]  = "\342\200\243 ",            /* ‣  */
+                        [DRAW_BLACK_CIRCLE]       = "\342\227\217 ",            /* ●  */
                 },
                 /* ASCII fallback */ {
                         [DRAW_TREE_VERT]          = "| ",
@@ -5474,6 +5409,7 @@ const char *draw_special_char(DrawSpecialChar ch) {
                         [DRAW_TREE_RIGHT]         = "`-",
                         [DRAW_TREE_SPACE]         = "  ",
                         [DRAW_TRIANGULAR_BULLET]  = "> ",
+                        [DRAW_BLACK_CIRCLE]       = "* ",
                 }
         };
 
@@ -5992,3 +5928,37 @@ int split_pair(const char *s, const char *sep, char **l, char **r) {
 
         return 0;
 }
+
+int shall_restore_state(void) {
+        _cleanup_free_ char *line;
+        char *w, *state;
+        size_t l;
+        int r;
+
+        r = proc_cmdline(&line);
+        if (r < 0)
+                return r;
+        if (r == 0) /* Container ... */
+                return 1;
+
+        FOREACH_WORD_QUOTED(w, l, line, state)
+                if (l == 23 && memcmp(w, "systemd.restore_state=0", 23))
+                        return 0;
+
+        return 1;
+}
+
+int proc_cmdline(char **ret) {
+        int r;
+
+        if (detect_container(NULL) > 0) {
+                *ret = NULL;
+                return 0;
+        }
+
+        r = read_one_line_file("/proc/cmdline", ret);
+        if (r < 0)
+                return r;
+
+        return 1;
+}