empire/empserver
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

(sendcmd): Cope gracefully with short writes and EINTR. Don't just

Browse source 
continue after real errors.
This commit is contained in:
Markus Armbruster 2007-12-14 06:42:57 +00:00
parent 92a14cca4d
commit 43cceac785
1 changed files with 16 additions and 7 deletions
Download patch file Download diff file Expand all files Collapse all files

23
src/client/expect.c
View file

@ -34,6 +34,7 @@
#include <config.h>
#include <ctype.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
@ -126,7 +127,9 @@ void
sendcmd(int s, char *cmd, char *arg)
{
char buf[128];
int cc, len;
char *p;
ssize_t n;
int len;
len = snprintf(buf, sizeof(buf), "%s %s\n",
cmd, arg != NULL ? arg : "");
@ -134,11 +137,17 @@ sendcmd(int s, char *cmd, char *arg)
fprintf(stderr, "%s too long\n", cmd);
exit(1);
}
cc = write(s, buf, len);
if (cc < 0) {
perror("sendcmd: write");
}
if (cc != len) {
fprintf(stderr, "sendcmd: short write (%d not %d)\n", cc, len);
p = buf;
while (len > 0) {
n = write(s, buf, len);
if (n < 0) {
if (errno != EINTR) {
perror("sendcmd: write");
exit(1);
}
n = 0;
}
p += n;
len -= n;
}
}