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Teach jobclient.h about fifo jobservers #2

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Teach jobclient.h about fifo jobservers #2

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37 changes: 29 additions & 8 deletions jobclient.h
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Original file line number Diff line number Diff line change
Expand Up @@ -4,6 +4,7 @@
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <fcntl.h>

// https://www.gnu.org/software/make/manual/html_node/POSIX-Jobserver.html#POSIX-Jobserver

Expand All @@ -22,15 +23,35 @@ static int parse_makeflags(int *fds) {
}
p += sizeof(flagname) - 1;

const char *c = strchr(p, ',');
if (!c) {
fprintf(stderr, "job: error: Incorrect --jobserver-auth format\n");
return 0;
}
c++;
if (strncmp(p, "fifo:", strlen("fifo:")) == 0) {
const char *fifo_name = strchr(p, ':');
if (!fifo_name) {
fprintf(stderr, "X_job: error: Incorrect --jobserver-auth format\n");
return 0;
}
fifo_name++;
fds[0] = open(fifo_name, O_RDONLY);
if (fds[0] < 0) {
fprintf(stderr, "job: cannot open jobserver %s: %s", fifo_name, strerror (errno));
return 0;
}
fds[1] = open(fifo_name, O_WRONLY);
if (fds[1] < 0) {
close(fds[0]);
fprintf(stderr, "job: cannot open jobserver %s: %s", fifo_name, strerror (errno));
return 0;
}
} else {
const char *c = strchr(p, ',');
if (!c) {
fprintf(stderr, "Y_job: error: Incorrect --jobserver-auth format\n");
return 0;
}
c++;

fds[0] = atoi(p);
fds[1] = atoi(c);
fds[0] = atoi(p);
fds[1] = atoi(c);
}

return 1;
}
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