diff options
Diffstat (limited to 'bin/watch.c')
-rw-r--r-- | bin/watch.c | 97 |
1 files changed, 0 insertions, 97 deletions
diff --git a/bin/watch.c b/bin/watch.c deleted file mode 100644 index 08a4ae9e..00000000 --- a/bin/watch.c +++ /dev/null @@ -1,97 +0,0 @@ -/* Copyright (c) 2017, June McEnroe <programble@gmail.com> - * - * This program is free software: you can redistribute it and/or modify - * it under the terms of the GNU Affero General Public License as published by - * the Free Software Foundation, either version 3 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 Affero General Public License for more details. - * - * You should have received a copy of the GNU Affero General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. - */ - -#include <sys/types.h> - -#include <err.h> -#include <fcntl.h> -#include <stdlib.h> -#include <sys/event.h> -#include <sys/wait.h> -#include <sysexits.h> -#include <unistd.h> - -static void watch(int kq, char *path) { - int fd = open(path, O_CLOEXEC); - if (fd < 0) err(EX_NOINPUT, "%s", path); - - struct kevent event; - EV_SET( - &event, - fd, - EVFILT_VNODE, - EV_ADD | EV_CLEAR, - NOTE_WRITE | NOTE_DELETE, - 0, - path - ); - int nevents = kevent(kq, &event, 1, NULL, 0, NULL); - if (nevents < 0) err(EX_OSERR, "kevent"); -} - -static void exec(char *const argv[]) { - pid_t pid = fork(); - if (pid < 0) err(EX_OSERR, "fork"); - - if (!pid) { - execvp(*argv, argv); - err(EX_NOINPUT, "%s", *argv); - } - - int status; - pid = wait(&status); - if (pid < 0) err(EX_OSERR, "wait"); - - if (WIFEXITED(status)) { - warnx("exit %d\n", WEXITSTATUS(status)); - } else if (WIFSIGNALED(status)) { - warnx("signal %d\n", WTERMSIG(status)); - } else { - warnx("status %d\n", status); - } -} - -int main(int argc, char *argv[]) { - if (argc < 3) return EX_USAGE; - - int kq = kqueue(); - if (kq < 0) err(EX_OSERR, "kqueue"); - - int i; - for (i = 1; i < argc - 1; ++i) { - if (argv[i][0] == '-') { - i++; - break; - } - watch(kq, argv[i]); - } - - exec(&argv[i]); - - for (;;) { - struct kevent event; - int nevents = kevent(kq, NULL, 0, &event, 1, NULL); - if (nevents < 0) err(EX_OSERR, "kevent"); - - if (event.fflags & NOTE_DELETE) { - close(event.ident); - sleep(1); - watch(kq, (char *)event.udata); - } - - exec(&argv[i]); - } -} |