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src/os/unix/ngx_daemon.c - nginx-1.7.10
Functions defined
Source code
- #include <ngx_config.h>
- #include <ngx_core.h>
- ngx_int_t
- ngx_daemon(ngx_log_t *log)
- {
- int fd;
- switch (fork()) {
- case -1:
- ngx_log_error(NGX_LOG_EMERG, log, ngx_errno, "fork() failed");
- return NGX_ERROR;
- case 0:
- break;
- default:
- exit(0);
- }
- ngx_pid = ngx_getpid();
- if (setsid() == -1) {
- ngx_log_error(NGX_LOG_EMERG, log, ngx_errno, "setsid() failed");
- return NGX_ERROR;
- }
- umask(0);
- fd = open("/dev/null", O_RDWR);
- if (fd == -1) {
- ngx_log_error(NGX_LOG_EMERG, log, ngx_errno,
- "open(\"/dev/null\") failed");
- return NGX_ERROR;
- }
- if (dup2(fd, STDIN_FILENO) == -1) {
- ngx_log_error(NGX_LOG_EMERG, log, ngx_errno, "dup2(STDIN) failed");
- return NGX_ERROR;
- }
- if (dup2(fd, STDOUT_FILENO) == -1) {
- ngx_log_error(NGX_LOG_EMERG, log, ngx_errno, "dup2(STDOUT) failed");
- return NGX_ERROR;
- }
- #if 0
- #endif
- if (fd > STDERR_FILENO) {
- if (close(fd) == -1) {
- ngx_log_error(NGX_LOG_EMERG, log, ngx_errno, "close() failed");
- return NGX_ERROR;
- }
- }
- return NGX_OK;
- }
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