2 Copyright (C) Andrew Tridgell 1996
3 Copyright (C) Paul Mackerras 1996
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21 Utilities used in rsync
27 int num_waiting(int fd)
30 ioctl(fd,FIONREAD,&len);
34 char *map_file(int fd,off_t len)
36 char *ret = (char *)mmap(NULL,len,PROT_READ,MAP_SHARED,fd,0);
40 void unmap_file(char *buf,off_t len)
47 /* this is taken from CVS */
48 int piped_child(char **command,int *f_in,int *f_out)
52 int from_child_pipe[2];
54 if (pipe(to_child_pipe) < 0 ||
55 pipe(from_child_pipe) < 0) {
56 fprintf(stderr,"pipe: %s\n",strerror(errno));
63 fprintf(stderr,"fork: %s\n",strerror(errno));
69 if (dup2(to_child_pipe[0], STDIN_FILENO) < 0 ||
70 close(to_child_pipe[1]) < 0 ||
71 close(from_child_pipe[0]) < 0 ||
72 dup2(from_child_pipe[1], STDOUT_FILENO) < 0) {
73 fprintf(stderr,"Failed to dup/close : %s\n",strerror(errno));
76 execvp(command[0], command);
77 fprintf(stderr,"Failed to exec %s : %s\n",
78 command[0],strerror(errno));
82 if (close(from_child_pipe[1]) < 0 ||
83 close(to_child_pipe[0]) < 0) {
84 fprintf(stderr,"Failed to close : %s\n",strerror(errno));
88 *f_in = from_child_pipe[0];
89 *f_out = to_child_pipe[1];
95 void out_of_memory(char *str)
97 fprintf(stderr,"out of memory in %s\n",str);
103 char *strdup(char *s)
105 int l = strlen(s) + 1;
106 char *ret = (char *)malloc(l);
114 int set_modtime(char *fname,time_t modtime)
118 tbuf.actime = time(NULL);
119 tbuf.modtime = modtime;
120 return utime(fname,&tbuf);
121 #elif defined(HAVE_UTIME)
125 return utime(fname,t);
128 t[0].tv_sec = time(NULL);
130 t[1].tv_sec = modtime;
132 return utimes(fname,t);
138 /****************************************************************************
139 Set a fd into blocking/nonblocking mode. Uses POSIX O_NONBLOCK if available,
143 ****************************************************************************/
144 int set_blocking(int fd, int set)
148 #define FLAG_TO_SET O_NONBLOCK
151 #define FLAG_TO_SET O_NDELAY
153 #define FLAG_TO_SET FNDELAY
157 if((val = fcntl(fd, F_GETFL, 0)) == -1)
159 if(set) /* Turn blocking on - ie. clear nonblock flag */
163 return fcntl( fd, F_SETFL, val);