| /* |
| * This file is part of the UCB release of Plan 9. It is subject to the license |
| * terms in the LICENSE file found in the top-level directory of this |
| * distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No |
| * part of the UCB release of Plan 9, including this file, may be copied, |
| * modified, propagated, or distributed except according to the terms contained |
| * in the LICENSE file. |
| */ |
| |
| #include <sys/types.h> |
| #include <unistd.h> |
| #include <stdlib.h> |
| #include <fcntl.h> |
| #include <string.h> |
| |
| /* Unlike the glibc version, this ensures that name is null-terminated.*/ |
| int __gethostname(char *name, size_t namelen) |
| { |
| int n, fd; |
| char buf[128]; |
| |
| fd = open("/dev/sysname", O_RDONLY); |
| if (fd < 0) |
| return -1; |
| n = read(fd, buf, sizeof(buf) - 1); |
| close(fd); |
| if (n <= 0) |
| return -1; |
| buf[n] = 0; |
| strncpy(name, buf, namelen); |
| name[namelen - 1] = 0; |
| return 0; |
| } |
| weak_alias(__gethostname, gethostname) |
