diff options
Diffstat (limited to 'src/libudev/libudev-util.c')
| -rw-r--r-- | src/libudev/libudev-util.c | 117 |
1 files changed, 17 insertions, 100 deletions
diff --git a/src/libudev/libudev-util.c b/src/libudev/libudev-util.c index b55bf75bfc..714dc50ae9 100644 --- a/src/libudev/libudev-util.c +++ b/src/libudev/libudev-util.c @@ -51,7 +51,7 @@ int util_delete_path(struct udev *udev, const char *path) if (path[0] == '/') while(path[1] == '/') path++; - util_strscpy(p, sizeof(p), path); + strscpy(p, sizeof(p), path); pos = strrchr(p, '/'); if (pos == p || pos == NULL) return 0; @@ -83,7 +83,7 @@ uid_t util_lookup_user(struct udev *udev, const char *user) size_t buflen = sysconf(_SC_GETPW_R_SIZE_MAX); char *buf = alloca(buflen); - if (strcmp(user, "root") == 0) + if (streq(user, "root")) return 0; uid = strtoul(user, &endptr, 10); if (endptr[0] == '\0') @@ -108,7 +108,7 @@ gid_t util_lookup_group(struct udev *udev, const char *group) size_t buflen = sysconf(_SC_GETPW_R_SIZE_MAX); char *buf = NULL; - if (strcmp(group, "root") == 0) + if (streq(group, "root")) return 0; gid = strtoul(group, &endptr, 10); if (endptr[0] == '\0') @@ -151,7 +151,7 @@ int util_resolve_subsys_kernel(struct udev *udev, const char *string, if (string[0] != '[') return -1; - util_strscpy(temp, sizeof(temp), string); + strscpy(temp, sizeof(temp), string); subsys = &temp[1]; @@ -183,7 +183,7 @@ int util_resolve_subsys_kernel(struct udev *udev, const char *string, val = udev_device_get_sysattr_value(dev, attr); if (val != NULL) - util_strscpy(result, maxsize, val); + strscpy(result, maxsize, val); else result[0] = '\0'; udev_dbg(udev, "value '[%s/%s]%s' is '%s'\n", subsys, sysname, attr, result); @@ -192,9 +192,9 @@ int util_resolve_subsys_kernel(struct udev *udev, const char *string, char *s; s = result; - l = util_strpcpyl(&s, maxsize, udev_device_get_syspath(dev), NULL); + l = strpcpyl(&s, maxsize, udev_device_get_syspath(dev), NULL); if (attr != NULL) - util_strpcpyl(&s, l, "/", attr, NULL); + strpcpyl(&s, l, "/", attr, NULL); udev_dbg(udev, "path '[%s/%s]%s' is '%s'\n", subsys, sysname, attr, result); } udev_device_unref(dev); @@ -207,7 +207,7 @@ ssize_t util_get_sys_core_link_value(struct udev *udev, const char *slink, const ssize_t len; const char *pos; - util_strscpyl(path, sizeof(path), syspath, "/", slink, NULL); + strscpyl(path, sizeof(path), syspath, "/", slink, NULL); len = readlink(path, target, sizeof(target)); if (len <= 0 || len == (ssize_t)sizeof(target)) return -1; @@ -216,7 +216,7 @@ ssize_t util_get_sys_core_link_value(struct udev *udev, const char *slink, const if (pos == NULL) return -1; pos = &pos[1]; - return util_strscpy(value, size, pos); + return strscpy(value, size, pos); } int util_resolve_sys_link(struct udev *udev, char *syspath, size_t size) @@ -241,9 +241,8 @@ int util_resolve_sys_link(struct udev *udev, char *syspath, size_t size) return -EINVAL; base[0] = '\0'; } - if (base == NULL) - return -EINVAL; - util_strscpyl(base, size - (base - syspath), "/", &link_target[back * 3], NULL); + + strscpyl(base, size - (base - syspath), "/", &link_target[back * 3], NULL); return 0; } @@ -307,89 +306,6 @@ void util_remove_trailing_chars(char *path, char c) path[--len] = '\0'; } -/* - * Concatenates strings. In any case, terminates in _all_ cases with '\0' - * and moves the @dest pointer forward to the added '\0'. Returns the - * remaining size, and 0 if the string was truncated. - */ -size_t util_strpcpy(char **dest, size_t size, const char *src) -{ - size_t len; - - len = strlen(src); - if (len >= size) { - if (size > 1) - *dest = mempcpy(*dest, src, size-1); - size = 0; - } else { - if (len > 0) { - *dest = mempcpy(*dest, src, len); - size -= len; - } - } - *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; -} - -/* concatenates list of strings, moves dest forward */ -size_t util_strpcpyl(char **dest, size_t size, const char *src, ...) -{ - va_list va; - - va_start(va, src); - do { - size = util_strpcpy(dest, size, src); - src = va_arg(va, char *); - } while (src != NULL); - va_end(va); - return size; -} - -/* copies string */ -size_t util_strscpy(char *dest, size_t size, const char *src) -{ - char *s; - - s = dest; - return util_strpcpy(&s, size, src); -} - -/* concatenates list of strings */ -size_t util_strscpyl(char *dest, size_t size, const char *src, ...) -{ - va_list va; - char *s; - - va_start(va, src); - s = dest; - do { - size = util_strpcpy(&s, size, src); - src = va_arg(va, char *); - } while (src != NULL); - va_end(va); - - return size; -} - /* count of characters used to encode one unicode char */ static int utf8_encoded_expected_len(const char *str) { @@ -651,7 +567,7 @@ err: * Murmurhash is under the MIT license. * */ -static unsigned int murmur_hash2(const char *key, int len, unsigned int seed) +static unsigned int murmur_hash2(const char *key, size_t len, unsigned int seed) { /* * 'm' and 'r' are mixing constants generated offline. @@ -666,17 +582,18 @@ static unsigned int murmur_hash2(const char *key, int len, unsigned int seed) /* mix 4 bytes at a time into the hash */ const unsigned char * data = (const unsigned char *)key; - while(len >= 4) { - unsigned int k = *(unsigned int *)data; + 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 += 4; - len -= 4; + data += sizeof(k); + len -= sizeof(k); } /* handle the last few bytes of the input array */ |