diff options
| -rw-r--r-- | .cvsignore | 1 | ||||
| -rw-r--r-- | Makefile | 6 | ||||
| -rw-r--r-- | install-check.c | 119 |
3 files changed, 126 insertions, 0 deletions
diff --git a/.cvsignore b/.cvsignore new file mode 100644 index 0000000..470028c --- /dev/null +++ b/.cvsignore @@ -0,0 +1 @@ +install-check diff --git a/Makefile b/Makefile new file mode 100644 index 0000000..dadc5de --- /dev/null +++ b/Makefile @@ -0,0 +1,6 @@ +install-check: install-check.c + $(CC) -o $@ install-check.c + +clean: + rm install-check + diff --git a/install-check.c b/install-check.c new file mode 100644 index 0000000..743d213 --- /dev/null +++ b/install-check.c @@ -0,0 +1,119 @@ +/* install-check + * Copyright (C) 2002 Manish Singh + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + */ + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> +#include <errno.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <sys/wait.h> + +static void +compare (const char *f1, + const char *f2) +{ + struct stat b1, b2; + int status; + pid_t pid, rpid; + + if (stat (f2, &b2) || stat (f1, &b1)) + return; + + if (b1.st_size != b2.st_size) + return; + + pid = fork (); + + if (pid == 0) + execlp ("cmp", "cmp", "-s", f1, f2, NULL); + else if (pid < 0) + return; + + do + rpid = waitpid (pid, &status, 0); + while (rpid == -1 && errno == EINTR); + + if (rpid != pid) + status = -1; + + if (status != -1 && WIFEXITED (status) && WEXITSTATUS (status) == 0) + exit (0); +} + +int +main (int argc, + char **argv) +{ + struct stat buf; + char **args; + int i, len; + char *dot, *lastarg, *start; + + lastarg = argv[argc - 1]; + + dot = strrchr (lastarg, '.'); + if (dot == NULL) + { + len = strlen (lastarg); + if (len < strlen ("orbit-idl-2")) + goto install; + + start = lastarg + len - strlen ("orbit-idl-2"); + if (strcmp (start, "orbit-idl-2") != 0) + goto install; + } + else if (dot[1] != 'h' && dot[1] != 'c' && strcmp (dot + 1, "idl") != 0) + goto install; + + if ((argc == 4) && + (strcmp (argv[1], "-c") == 0) && + (strcmp (argv[2], "-d") != 0) && + !stat (argv[3], &buf) && + !S_ISDIR (buf.st_mode)) + compare (argv[2], argv[3]); + else if ((argc == 3) && + (strcmp (argv[1], "-d") != 0) && + !stat (argv[2], &buf) && + !S_ISDIR (buf.st_mode)) + compare (argv[1], argv[2]); + else if ((argc == 6) && + (strcmp (argv[1], "-c") == 0) && + (strcmp (argv[2], "-m") == 0) && + !stat (argv[5], &buf) && + !S_ISDIR (buf.st_mode)) + compare (argv[4], argv[5]); + else if ((argc == 5) && + (strcmp (argv[1], "-m") == 0) && + !stat (argv[4], &buf) && + !S_ISDIR (buf.st_mode)) + compare (argv[3], argv[4]); + +install: + args = malloc (sizeof (char *) * (argc + 1)); + + args[0] = "/usr/bin/install"; + + for (i = 1; i < argc; i++) + args[i] = argv[i]; + + args[argc] = NULL; + + return execv (args[0], args); +} |