83 lines
2 KiB
C
83 lines
2 KiB
C
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#include "../alog.h"
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#include <unistd.h>
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#include <stdlib.h>
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#include <sys/types.h>
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#include <stdio.h>
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#include <string.h>
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int out_fd[2];
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int err_fd[2];
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const char *out_message = "standard message";
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const char *err_message = "error message";
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int main() {
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// make RPC pipe
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pipe(out_fd);
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pipe(err_fd);
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// remove stdout and stderr
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_init_alog();
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alog_remove_target(1);
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alog_remove_target(2);
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pid_t childpid;
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if ((childpid = fork()) == -1) {
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perror("fork fail");
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return 1;
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}
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// child process
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if (childpid == 0) {
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close(out_fd[0]);
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close(err_fd[0]);
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// add alog targets in this pipe
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alog_add_target(out_fd[1], ALOG_OUT);
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alog_add_target(err_fd[1], ALOG_ERR);
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// write to the things
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alog(ERROR, err_message);
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alog(PRINT, out_message);
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exit(0);
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// parent process
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} else {
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// we can do checks from here
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char out_read_buffer[128] = {0};
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char err_read_buffer[128] = {0};
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usleep(10);
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read(err_fd[0], err_read_buffer, 128);
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// cant check read len because of timestamp
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if (!strstr(err_read_buffer, err_message)) {
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printf("err log should contain '%s'.\ninstead reads '%s'\n",
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err_message, err_read_buffer);
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return 1;
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}
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int num_out = read(out_fd[0], out_read_buffer, 128);
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if (num_out != (int) (strlen(out_message) + strlen(err_read_buffer))) {
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printf("Read %i bytes from out log when %lu were written!\n",
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num_out, strlen(out_message) + strlen(err_read_buffer) + 1);
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return 1;
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}
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if (strncmp(out_read_buffer, err_read_buffer, strlen(err_read_buffer))) {
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printf("out log first message should read '%s'.\ninstead reads '%s'\n",
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err_read_buffer, out_read_buffer);
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}
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if (strcmp(&out_read_buffer[strlen(err_read_buffer)], out_message)) {
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printf("out log second message should read '%s'.\ninstead reads '%s'\n",
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out_message, &out_read_buffer[strlen(err_read_buffer)]);
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return 1;
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}
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printf("out and err log printing are successfull.\n");
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}
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deinit_alog();
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return 0;
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}
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