From ec1bcdcd0dd6e196303e8d9a30b3b2740e32c502 Mon Sep 17 00:00:00 2001 From: Mattias Andrée Date: Mon, 10 Feb 2025 17:50:58 +0100 Subject: Minor code improvements and split into multiple c files MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Mattias Andrée --- libcoopgamma_get_socket_file.c | 43 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) create mode 100644 libcoopgamma_get_socket_file.c (limited to 'libcoopgamma_get_socket_file.c') diff --git a/libcoopgamma_get_socket_file.c b/libcoopgamma_get_socket_file.c new file mode 100644 index 0000000..3ac9a2b --- /dev/null +++ b/libcoopgamma_get_socket_file.c @@ -0,0 +1,43 @@ +/* See LICENSE file for copyright and license details. */ +#include "common.h" + + +/** + * Get the socket file of the coopgamma server + * + * SIGCHLD must not be ignored or blocked + * + * @param method The adjustment method, `NULL` for automatic + * @param site The site, `NULL` for automatic + * @return The pathname of the server's socket, `NULL` on error + * or if there server does have its own socket. The later + * case is detected by checking that `errno` is set to 0, + * and is the case when communicating with a server in a + * multi-server display server like mds. + */ +char * +libcoopgamma_get_socket_file(const char *restrict method, const char *restrict site) +{ + char *raw; + char *p; + + raw = libcoopgamma_query__(method, site, "-qq"); + if (!raw) + return NULL; + + p = &strchr(raw, '\0')[-1]; + if (p < raw || *p != '\n') { + errno = EBADMSG; + goto fail; + } + *p = '\0'; + if (!*raw) { + errno = EBADMSG; + goto fail; + } + + return raw; +fail: + free(raw); + return NULL; +} -- cgit v1.2.3-70-g09d2