asolkar/dwl
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set O_NONBLOCK flag to stdout

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Leonardo Hernández Hernández 2024-06-27 13:19:16 -06:00
parent 2b4893a0ad
commit 71f11e6cf6
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3 changed files with 23 additions and 0 deletions
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6
dwl.c
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@ -2190,6 +2190,12 @@ run(char *startup_cmd)
close(piperw[1]); close(piperw[1]);
close(piperw[0]); close(piperw[0]);
} }
/* Mark stdout as non-blocking to avoid people who does not close stdin
* nor consumes it in their startup script getting dwl frozen */
if (fd_set_nonblock(STDOUT_FILENO) < 0)
close(STDOUT_FILENO);
printstatus(); printstatus();
/* At this point the outputs are initialized, choose initial selmon based on /* At this point the outputs are initialized, choose initial selmon based on

16
util.c
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@ -3,6 +3,7 @@
#include <stdio.h> #include <stdio.h>
#include <stdlib.h> #include <stdlib.h>
#include <string.h> #include <string.h>
#include <fcntl.h>
#include "util.h" #include "util.h"
@ -33,3 +34,18 @@ ecalloc(size_t nmemb, size_t size)
die("calloc:"); die("calloc:");
return p; return p;
} }
int
fd_set_nonblock(int fd) {
int flags = fcntl(fd, F_GETFL);
if (flags < 0) {
perror("fcntl(F_GETFL):");
return -1;
}
if (fcntl(fd, F_SETFL, flags | O_NONBLOCK) < 0) {
perror("fcntl(F_SETFL):");
return -1;
}
return 0;
}

1
util.h
View File

@ -2,3 +2,4 @@
void die(const char *fmt, ...); void die(const char *fmt, ...);
void *ecalloc(size_t nmemb, size_t size); void *ecalloc(size_t nmemb, size_t size);
int fd_set_nonblock(int fd);