libudev: use get_*_creds from shared rather than util_lookup_*

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

diff --git a/src/libudev/libudev-util.c b/src/libudev/libudev-util.c
index b5b9db67fc5dcb65cb9cd4ac1aa3d39e68cb231b..93e78d5d0798865ca03c9f9af39f4fa959343ce8 100644 (file)
--- a/src/libudev/libudev-util.c
+++ b/src/libudev/libudev-util.c
@@ -36,6 +36,7 @@
 #include "libudev.h"
 #include "libudev-private.h"
 #include "utf8.h"
+#include "MurmurHash2.h"
 
 /**
  * SECTION:libudev-util
@@ -76,70 +77,6 @@ int util_delete_path(struct udev *udev, const char *path)
         return err;
 }
 
-uid_t util_lookup_user(struct udev *udev, const char *user)
-{
-        char *endptr;
-        struct passwd pwbuf;
-        struct passwd *pw;
-        uid_t uid;
-        size_t buflen = sysconf(_SC_GETPW_R_SIZE_MAX);
-        char *buf = alloca(buflen);
-
-        if (streq(user, "root"))
-                return 0;
-        uid = strtoul(user, &endptr, 10);
-        if (endptr[0] == '\0')
-                return uid;
-
-        errno = getpwnam_r(user, &pwbuf, buf, buflen, &pw);
-        if (pw != NULL)
-                return pw->pw_uid;
-        if (errno == 0 || errno == ENOENT || errno == ESRCH)
-                udev_err(udev, "specified user '%s' unknown\n", user);
-        else
-                udev_err(udev, "error resolving user '%s': %m\n", user);
-        return 0;
-}
-
-gid_t util_lookup_group(struct udev *udev, const char *group)
-{
-        char *endptr;
-        struct group grbuf;
-        struct group *gr;
-        gid_t gid = 0;
-        size_t buflen = sysconf(_SC_GETPW_R_SIZE_MAX);
-        char *buf = NULL;
-
-        if (streq(group, "root"))
-                return 0;
-        gid = strtoul(group, &endptr, 10);
-        if (endptr[0] == '\0')
-                return gid;
-        gid = 0;
-        for (;;) {
-                char *newbuf;
-
-                newbuf = realloc(buf, buflen);
-                if (!newbuf)
-                        break;
-                buf = newbuf;
-                errno = getgrnam_r(group, &grbuf, buf, buflen, &gr);
-                if (gr != NULL) {
-                        gid = gr->gr_gid;
-                } else if (errno == ERANGE) {
-                        buflen *= 2;
-                        continue;
-                } else if (errno == 0 || errno == ENOENT || errno == ESRCH) {
-                        udev_err(udev, "specified group '%s' unknown\n", group);
-                } else {
-                        udev_err(udev, "error resolving group '%s': %m\n", group);
-                }
-                break;
-        }
-        free(buf);
-        return gid;
-}
-
 /* handle "[<SUBSYSTEM>/<KERNEL>]<attribute>" format */
 int util_resolve_subsys_kernel(struct udev *udev, const char *string,
                                char *result, size_t maxsize, int read_value)
@@ -202,6 +139,7 @@ int util_resolve_subsys_kernel(struct udev *udev, const char *string,
         udev_device_unref(dev);
         return 0;
 }
+
 ssize_t util_get_sys_core_link_value(struct udev *udev, const char *slink, const char *syspath, char *value, size_t size)
 {
         char path[UTIL_PATH_SIZE];
@@ -396,64 +334,9 @@ _public_ int udev_util_encode_string(const char *str, char *str_enc, size_t len)
         return encode_devnode_name(str, str_enc, len);
 }
 
-/*
- * http://sites.google.com/site/murmurhash/
- *
- * All code is released to the public domain. For business purposes,
- * Murmurhash is under the MIT license.
- *
- */
-static unsigned int murmur_hash2(const char *key, size_t len, unsigned int seed)
-{
-        /*
-         *  'm' and 'r' are mixing constants generated offline.
-         *  They're not really 'magic', they just happen to work well.
-         */
-        const unsigned int m = 0x5bd1e995;
-        const int r = 24;
-
-        /* initialize the hash to a 'random' value */
-        unsigned int h = seed ^ len;
-
-        /* mix 4 bytes at a time into the hash */
-        const unsigned char * data = (const unsigned char *)key;
-
-        while(len >= sizeof(unsigned int)) {
-                unsigned int k;
-
-                memcpy(&k, data, sizeof(k));
-                k *= m;
-                k ^= k >> r;
-                k *= m;
-                h *= m;
-                h ^= k;
-
-                data += sizeof(k);
-                len -= sizeof(k);
-        }
-
-        /* handle the last few bytes of the input array */
-        switch(len) {
-        case 3:
-                h ^= data[2] << 16;
-        case 2:
-                h ^= data[1] << 8;
-        case 1:
-                h ^= data[0];
-                h *= m;
-        };
-
-        /* do a few final mixes of the hash to ensure the last few bytes are well-incorporated */
-        h ^= h >> 13;
-        h *= m;
-        h ^= h >> 15;
-
-        return h;
-}
-
 unsigned int util_string_hash32(const char *str)
 {
-        return murmur_hash2(str, strlen(str), 0);
+        return MurmurHash2(str, strlen(str), 0);
 }
 
 /* get a bunch of bit numbers out of the hash, and set the bits in our bit field */
@@ -471,7 +354,7 @@ uint64_t util_string_bloom64(const char *str)
 
 ssize_t print_kmsg(const char *fmt, ...)
 {
-        int fd;
+        _cleanup_close_ int fd = -1;
         va_list ap;
         char text[1024];
         ssize_t len;
@@ -489,7 +372,7 @@ ssize_t print_kmsg(const char *fmt, ...)
 
         ret = write(fd, text, len);
         if (ret < 0)
-                ret = -errno;
-        close(fd);
+                return -errno;
+
         return ret;
 }