nss-myhostname: integrate documentation

[elogind.git] / src / libudev / libudev-util.c

diff --git a/src/libudev/libudev-util.c b/src/libudev/libudev-util.c
index 944d9dfcbbe6b9961d7a0fe1b8d6d99bc6d09239..b55bf75bfcf0aa21da12cf2e1bed8c5c1cc39d5d 100644 (file)
--- a/src/libudev/libudev-util.c
+++ b/src/libudev/libudev-util.c
@@ -1,13 +1,21 @@
-/*
- * libudev - interface to udev device information
- *
- * Copyright (C) 2008-2011 Kay Sievers <kay.sievers@vrfy.org>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- */
+/***
+  This file is part of systemd.
+
+  Copyright 2008-2012 Kay Sievers <kay@vrfy.org>
+
+  systemd is free software; you can redistribute it and/or modify it
+  under the terms of the GNU Lesser General Public License as published by
+  the Free Software Foundation; either version 2.1 of the License, or
+  (at your option) any later version.
+
+  systemd is distributed in the hope that it will be useful, but
+  WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+  Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public License
+  along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
 
 #include <stdio.h>
 #include <stdlib.h>
@@ -85,9 +93,9 @@ uid_t util_lookup_user(struct udev *udev, const char *user)
         if (pw != NULL)
                 return pw->pw_uid;
         if (errno == 0 || errno == ENOENT || errno == ESRCH)
-                err(udev, "specified user '%s' unknown\n", user);
+                udev_err(udev, "specified user '%s' unknown\n", user);
         else
-                err(udev, "error resolving user '%s': %m\n", user);
+                udev_err(udev, "error resolving user '%s': %m\n", user);
         return 0;
 }
 
@@ -120,9 +128,9 @@ gid_t util_lookup_group(struct udev *udev, const char *group)
                         buflen *= 2;
                         continue;
                 } else if (errno == 0 || errno == ENOENT || errno == ESRCH) {
-                        err(udev, "specified group '%s' unknown\n", group);
+                        udev_err(udev, "specified group '%s' unknown\n", group);
                 } else {
-                        err(udev, "error resolving group '%s': %m\n", group);
+                        udev_err(udev, "error resolving group '%s': %m\n", group);
                 }
                 break;
         }
@@ -178,7 +186,7 @@ int util_resolve_subsys_kernel(struct udev *udev, const char *string,
                         util_strscpy(result, maxsize, val);
                 else
                         result[0] = '\0';
-                dbg(udev, "value '[%s/%s]%s' is '%s'\n", subsys, sysname, attr, result);
+                udev_dbg(udev, "value '[%s/%s]%s' is '%s'\n", subsys, sysname, attr, result);
         } else {
                 size_t l;
                 char *s;
@@ -187,7 +195,7 @@ int util_resolve_subsys_kernel(struct udev *udev, const char *string,
                 l = util_strpcpyl(&s, maxsize, udev_device_get_syspath(dev), NULL);
                 if (attr != NULL)
                         util_strpcpyl(&s, l, "/", attr, NULL);
-                dbg(udev, "path '[%s/%s]%s' is '%s'\n", subsys, sysname, attr, result);
+                udev_dbg(udev, "path '[%s/%s]%s' is '%s'\n", subsys, sysname, attr, result);
         }
         udev_device_unref(dev);
         return 0;
@@ -288,26 +296,6 @@ size_t util_path_encode(const char *src, char *dest, size_t size)
         return j;
 }
 
-size_t util_path_decode(char *s)
-{
-        size_t i, j;
-
-        for (i = 0, j = 0; s[i] != '\0'; j++) {
-                if (memcmp(&s[i], "\\x2f", 4) == 0) {
-                        s[j] = '/';
-                        i += 4;
-                } else if (memcmp(&s[i], "\\x5c", 4) == 0) {
-                        s[j] = '\\';
-                        i += 4;
-                } else {
-                        s[j] = s[i];
-                        i++;
-                }
-        }
-        s[j] = '\0';
-        return j;
-}
-
 void util_remove_trailing_chars(char *path, char c)
 {
         size_t len;
@@ -333,14 +321,32 @@ size_t util_strpcpy(char **dest, size_t size, const char *src)
                 if (size > 1)
                         *dest = mempcpy(*dest, src, size-1);
                 size = 0;
-                *dest[0] = '\0';
         } else {
                 if (len > 0) {
                         *dest = mempcpy(*dest, src, len);
                         size -= len;
                 }
-                *dest[0] = '\0';
         }
+        *dest[0] = '\0';
+        return size;
+}
+
+size_t util_strpcpyf(char **dest, size_t size, const char *src, ...)
+{
+        va_list va;
+        int i;
+
+        va_start(va, src);
+        i = vsnprintf(*dest, size, src, va);
+        if (i < (int)size) {
+                *dest += i;
+                size -= i;
+        } else {
+                *dest += size;
+                size = 0;
+        }
+        va_end(va);
+        *dest[0] = '\0';
         return size;
 }
 
@@ -355,7 +361,6 @@ size_t util_strpcpyl(char **dest, size_t size, const char *src, ...)
                 src = va_arg(va, char *);
         } while (src != NULL);
         va_end(va);
-
         return size;
 }
 
@@ -711,19 +716,27 @@ uint64_t util_string_bloom64(const char *str)
         return bits;
 }
 
-#define USEC_PER_SEC  1000000ULL
-#define NSEC_PER_USEC 1000ULL
-unsigned long long ts_usec(const struct timespec *ts)
+ssize_t print_kmsg(const char *fmt, ...)
 {
-        return (unsigned long long) ts->tv_sec * USEC_PER_SEC +
-               (unsigned long long) ts->tv_nsec / NSEC_PER_USEC;
-}
+        int fd;
+        va_list ap;
+        char text[1024];
+        ssize_t len;
+        ssize_t ret;
 
-unsigned long long now_usec(void)
-{
-        struct timespec ts;
+        fd = open("/dev/kmsg", O_WRONLY|O_NOCTTY|O_CLOEXEC);
+        if (fd < 0)
+                return -errno;
 
-        if (clock_gettime(CLOCK_MONOTONIC, &ts) != 0)
-                return 0;
-        return ts_usec(&ts);
+        len = snprintf(text, sizeof(text), "<30>systemd-udevd[%u]: ", getpid());
+
+        va_start(ap, fmt);
+        len += vsnprintf(text + len, sizeof(text) - len, fmt, ap);
+        va_end(ap);
+
+        ret = write(fd, text, len);
+        if (ret < 0)
+                ret = -errno;
+        close(fd);
+        return ret;
 }