+
+/* like strncpy but does not 0 fill the buffer and always null
+ terminates (thus it can use maxlen+1 space in d) */
+void strlcpy(char *d, char *s, int maxlen)
+{
+ int len = strlen(s);
+ if (len > maxlen) len = maxlen;
+ memcpy(d, s, len);
+ d[len] = 0;
+}
+
+/* turn a user name into a uid */
+int name_to_uid(char *name, uid_t *uid)
+{
+ struct passwd *pass;
+ if (!name || !*name) return 0;
+ pass = getpwnam(name);
+ if (pass) {
+ *uid = pass->pw_uid;
+ return 1;
+ }
+ return 0;
+}
+
+/* turn a group name into a gid */
+int name_to_gid(char *name, gid_t *gid)
+{
+ struct group *grp;
+ if (!name || !*name) return 0;
+ grp = getgrnam(name);
+ if (grp) {
+ *gid = grp->gr_gid;
+ return 1;
+ }
+ return 0;
+}
+
+
+/****************************************************************************
+check if a process exists.
+****************************************************************************/
+int process_exists(int pid)
+{
+ return(kill(pid,0) == 0 || errno != ESRCH);
+}
+
+/* lock a byte range in a open file */
+int lock_range(int fd, int offset, int len)
+{
+ struct flock lock;
+
+ lock.l_type = F_WRLCK;
+ lock.l_whence = SEEK_SET;
+ lock.l_start = offset;
+ lock.l_len = len;
+ lock.l_pid = 0;
+
+ return fcntl(fd,F_SETLK,&lock) == 0;
+}
+
+
+void glob_expand(char **argv, int *argc, int maxargs)
+{
+#ifndef HAVE_GLOB
+ (*argc)++;
+ return;
+#else
+ glob_t globbuf;
+ int i;
+
+ memset(&globbuf, 0, sizeof(globbuf));
+ glob(argv[*argc], 0, NULL, &globbuf);
+ if (globbuf.gl_pathc == 0) {
+ (*argc)++;
+ globfree(&globbuf);
+ return;
+ }
+ for (i=0; i<(maxargs - (*argc)) && i<globbuf.gl_pathc;i++) {
+ if (i == 0) free(argv[*argc]);
+ argv[(*argc) + i] = strdup(globbuf.gl_pathv[i]);
+ if (!argv[(*argc) + i]) out_of_memory("glob_expand");
+ }
+ globfree(&globbuf);
+ (*argc) += i;
+#endif
+}
+
+
+/*******************************************************************
+ convert a string to lower case
+********************************************************************/
+void strlower(char *s)
+{
+ while (*s) {
+ if (isupper(*s)) *s = tolower(*s);
+ s++;
+ }
+}