mirror of
https://github.com/systemd/systemd
synced 2024-07-22 02:34:54 +00:00
19 lines
581 B
C
19 lines
581 B
C
/* SPDX-License-Identifier: CC0-1.0 */
|
|
|
|
#include <errno.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
#include <sd-bus.h>
|
|
|
|
int writer_with_negative_errno_return(int fd, sd_bus_error *error) {
|
|
const char *message = "Hello, World!\n";
|
|
|
|
ssize_t n = write(fd, message, strlen(message));
|
|
if (n >= 0)
|
|
return n; /* On success, return the number of bytes written, possibly 0. */
|
|
|
|
/* On error, initialize the error structure, and also propagate the errno
|
|
* value that write(2) set for us. */
|
|
return sd_bus_error_set_errnof(error, errno, "Failed to write to fd %i: %m", fd);
|
|
}
|