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edf77a112f
Signed-off-by: Martin Schwenke <martin@meltin.net> Reviewed-by: Volker Lendecke <vl@samba.org> Autobuild-User(master): Martin Schwenke <martins@samba.org> Autobuild-Date(master): Wed Aug 2 07:28:44 CEST 2017 on sn-devel-144
86 lines
1.8 KiB
C
86 lines
1.8 KiB
C
/*
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Create and remove pidfile
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Copyright (C) Amitay Isaacs 2016
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include "replace.h"
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#include "system/filesys.h"
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#include <talloc.h>
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#include "lib/util/blocking.h"
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#include "lib/util/pidfile.h"
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#include "common/pidfile.h"
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struct pidfile_context {
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const char *pidfile;
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int fd;
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pid_t pid;
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};
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static int pidfile_context_destructor(struct pidfile_context *pid_ctx);
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int pidfile_context_create(TALLOC_CTX *mem_ctx, const char *pidfile,
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struct pidfile_context **result)
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{
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struct pidfile_context *pid_ctx;
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int fd, ret = 0;
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pid_ctx = talloc_zero(mem_ctx, struct pidfile_context);
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if (pid_ctx == NULL) {
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return ENOMEM;
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}
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pid_ctx->pidfile = talloc_strdup(pid_ctx, pidfile);
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if (pid_ctx->pidfile == NULL) {
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ret = ENOMEM;
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goto fail;
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}
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pid_ctx->pid = getpid();
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ret = pidfile_path_create(pid_ctx->pidfile, &fd);
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if (ret != 0) {
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return ret;
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}
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pid_ctx->fd = fd;
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talloc_set_destructor(pid_ctx, pidfile_context_destructor);
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*result = pid_ctx;
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return 0;
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fail:
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talloc_free(pid_ctx);
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return ret;
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}
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static int pidfile_context_destructor(struct pidfile_context *pid_ctx)
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{
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if (getpid() != pid_ctx->pid) {
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return 0;
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}
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(void) unlink(pid_ctx->pidfile);
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pidfile_fd_close(pid_ctx->fd);
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return 0;
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}
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