chiark / gitweb /
always use /etc/os-release and ignore all distro-specific files
[elogind.git] / src / util.c
index c9ad831c6ca95fbad570f2640f919dcf2a0e4ebf..e9869ea4fad3bfd3695d41a6de7059db6deedfed 100644 (file)
@@ -705,15 +705,22 @@ int read_one_line_file(const char *fn, char **line) {
         assert(fn);
         assert(line);
 
-        if (!(f = fopen(fn, "re")))
+        f = fopen(fn, "re");
+        if (!f)
                 return -errno;
 
-        if (!(fgets(t, sizeof(t), f))) {
-                r = feof(f) ? -EIO : -errno;
-                goto finish;
+        if (!fgets(t, sizeof(t), f)) {
+
+                if (ferror(f)) {
+                        r = -errno;
+                        goto finish;
+                }
+
+                t[0] = 0;
         }
 
-        if (!(c = strdup(t))) {
+        c = strdup(t);
+        if (!c) {
                 r = -ENOMEM;
                 goto finish;
         }
@@ -2544,7 +2551,7 @@ int ask(char *ret, const char *replies, const char *text, ...) {
         }
 }
 
-int reset_terminal_fd(int fd) {
+int reset_terminal_fd(int fd, bool switch_to_text) {
         struct termios termios;
         int r = 0;
 
@@ -2560,7 +2567,8 @@ int reset_terminal_fd(int fd) {
         ioctl(fd, TIOCNXCL);
 
         /* Switch to text mode */
-        ioctl(fd, KDSETMODE, KD_TEXT);
+        if (switch_to_text)
+                ioctl(fd, KDSETMODE, KD_TEXT);
 
         /* Enable console unicode mode */
         ioctl(fd, KDSKBMODE, K_UNICODE);
@@ -2614,7 +2622,7 @@ int reset_terminal(const char *name) {
         if (fd < 0)
                 return fd;
 
-        r = reset_terminal_fd(fd);
+        r = reset_terminal_fd(fd, true);
         close_nointr_nofail(fd);
 
         return r;
@@ -2808,7 +2816,8 @@ int acquire_terminal(const char *name, bool fail, bool force, bool ignore_tiocst
         if (notify >= 0)
                 close_nointr_nofail(notify);
 
-        if ((r = reset_terminal_fd(fd)) < 0)
+        r = reset_terminal_fd(fd, true);
+        if (r < 0)
                 log_warning("Failed to reset terminal: %s", strerror(-r));
 
         return fd;
@@ -3261,11 +3270,15 @@ fallback:
 void rename_process(const char name[8]) {
         assert(name);
 
-        prctl(PR_SET_NAME, name);
+        /* This is a like a poor man's setproctitle(). It changes the
+         * comm field, argv[0], and also the glibc's internally used
+         * name of the process. For the first one a limit of 16 chars
+         * applies, to the second one usually one of 10 (i.e. length
+         * of "/sbin/init"), to the third one one of 7 (i.e. length of
+         * "systemd"). If you pass a longer string it will be
+         * truncated */
 
-        /* This is a like a poor man's setproctitle(). The string
-         * passed should fit in 7 chars (i.e. the length of
-         * "systemd") */
+        prctl(PR_SET_NAME, name);
 
         if (program_invocation_name)
                 strncpy(program_invocation_name, name, strlen(program_invocation_name));
@@ -3775,139 +3788,6 @@ void status_welcome(void) {
                         log_warning("Failed to read /etc/os-release: %s", strerror(-r));
         }
 
-#if defined(TARGET_FEDORA)
-        if (!pretty_name) {
-                if ((r = read_one_line_file("/etc/system-release", &pretty_name)) < 0) {
-
-                        if (r != -ENOENT)
-                                log_warning("Failed to read /etc/system-release: %s", strerror(-r));
-                }
-        }
-
-        if (!ansi_color && pretty_name) {
-
-                /* This tries to mimic the color magic the old Red Hat sysinit
-                 * script did. */
-
-                if (startswith(pretty_name, "Red Hat"))
-                        const_color = "0;31"; /* Red for RHEL */
-                else if (startswith(pretty_name, "Fedora"))
-                        const_color = "0;34"; /* Blue for Fedora */
-        }
-
-#elif defined(TARGET_SUSE)
-
-        if (!pretty_name) {
-                if ((r = read_one_line_file("/etc/SuSE-release", &pretty_name)) < 0) {
-
-                        if (r != -ENOENT)
-                                log_warning("Failed to read /etc/SuSE-release: %s", strerror(-r));
-                }
-        }
-
-        if (!ansi_color)
-                const_color = "0;32"; /* Green for openSUSE */
-
-#elif defined(TARGET_GENTOO)
-
-        if (!pretty_name) {
-                if ((r = read_one_line_file("/etc/gentoo-release", &pretty_name)) < 0) {
-
-                        if (r != -ENOENT)
-                                log_warning("Failed to read /etc/gentoo-release: %s", strerror(-r));
-                }
-        }
-
-        if (!ansi_color)
-                const_color = "1;34"; /* Light Blue for Gentoo */
-
-#elif defined(TARGET_ALTLINUX)
-
-        if (!pretty_name) {
-                if ((r = read_one_line_file("/etc/altlinux-release", &pretty_name)) < 0) {
-
-                        if (r != -ENOENT)
-                                log_warning("Failed to read /etc/altlinux-release: %s", strerror(-r));
-                }
-        }
-
-        if (!ansi_color)
-                const_color = "0;36"; /* Cyan for ALTLinux */
-
-
-#elif defined(TARGET_DEBIAN)
-
-        if (!pretty_name) {
-                char *version;
-
-                if ((r = read_one_line_file("/etc/debian_version", &version)) < 0) {
-
-                        if (r != -ENOENT)
-                                log_warning("Failed to read /etc/debian_version: %s", strerror(-r));
-                } else {
-                        pretty_name = strappend("Debian ", version);
-                        free(version);
-
-                        if (!pretty_name)
-                                log_warning("Failed to allocate Debian version string.");
-                }
-        }
-
-        if (!ansi_color)
-                const_color = "1;31"; /* Light Red for Debian */
-
-#elif defined(TARGET_UBUNTU)
-
-        if ((r = parse_env_file("/etc/lsb-release", NEWLINE,
-                                "DISTRIB_DESCRIPTION", &pretty_name,
-                                NULL)) < 0) {
-
-                if (r != -ENOENT)
-                        log_warning("Failed to read /etc/lsb-release: %s", strerror(-r));
-        }
-
-        if (!ansi_color)
-                const_color = "0;33"; /* Orange/Brown for Ubuntu */
-
-#elif defined(TARGET_MANDRIVA)
-
-        if (!pretty_name) {
-                char *s, *p;
-
-                if ((r = read_one_line_file("/etc/mandriva-release", &s) < 0)) {
-                        if (r != -ENOENT)
-                                log_warning("Failed to read /etc/mandriva-release: %s", strerror(-r));
-                } else {
-                        p = strstr(s, " release ");
-                        if (p) {
-                                *p = '\0';
-                                p += 9;
-                                p[strcspn(p, " ")] = '\0';
-
-                                /* This corresponds to standard rc.sysinit */
-                                if (asprintf(&pretty_name, "%s\x1B[0;39m %s", s, p) > 0)
-                                        const_color = "1;36";
-                                else
-                                        log_warning("Failed to allocate Mandriva version string.");
-                        } else
-                                log_warning("Failed to parse /etc/mandriva-release");
-                        free(s);
-                }
-        }
-#elif defined(TARGET_MEEGO)
-
-        if (!pretty_name) {
-                if ((r = read_one_line_file("/etc/meego-release", &pretty_name)) < 0) {
-
-                        if (r != -ENOENT)
-                                log_warning("Failed to read /etc/meego-release: %s", strerror(-r));
-                }
-        }
-
-       if (!ansi_color)
-               const_color = "1;35"; /* Bright Magenta for MeeGo */
-#endif
-
         if (!pretty_name && !const_pretty)
                 const_pretty = "Linux";
 
@@ -4617,11 +4497,12 @@ void execute_directory(const char *directory, DIR *d, char *argv[]) {
         }
 
         while (!hashmap_isempty(pids)) {
+                pid_t pid = PTR_TO_UINT(hashmap_first_key(pids));
                 siginfo_t si;
                 char *path;
 
                 zero(si);
-                if (waitid(P_ALL, 0, &si, WEXITED) < 0) {
+                if (waitid(P_PID, pid, &si, WEXITED) < 0) {
 
                         if (errno == EINTR)
                                 continue;
@@ -6279,3 +6160,39 @@ void* memdup(const void *p, size_t l) {
         memcpy(r, p, l);
         return r;
 }
+
+int fd_inc_sndbuf(int fd, size_t n) {
+        int r, value;
+        socklen_t l = sizeof(value);
+
+        r = getsockopt(fd, SOL_SOCKET, SO_SNDBUF, &value, &l);
+        if (r >= 0 &&
+            l == sizeof(value) &&
+            (size_t) value >= n*2)
+                return 0;
+
+        value = (int) n;
+        r = setsockopt(fd, SOL_SOCKET, SO_SNDBUF, &value, sizeof(value));
+        if (r < 0)
+                return -errno;
+
+        return 1;
+}
+
+int fd_inc_rcvbuf(int fd, size_t n) {
+        int r, value;
+        socklen_t l = sizeof(value);
+
+        r = getsockopt(fd, SOL_SOCKET, SO_RCVBUF, &value, &l);
+        if (r >= 0 &&
+            l == sizeof(value) &&
+            (size_t) value >= n*2)
+                return 0;
+
+        value = (int) n;
+        r = setsockopt(fd, SOL_SOCKET, SO_RCVBUF, &value, sizeof(value));
+        if (r < 0)
+                return -errno;
+
+        return 1;
+}