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(rcmd_af): Protect socket operations with TEMP_FAILURE_RETRY. Use writev instead of multiple write.

This commit is contained in:
Ulrich Drepper 2003-01-18 10:07:01 +00:00
parent d32e434671
commit e76afb7be1
1 changed files with 14 additions and 5 deletions
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19
inet/rcmd.c
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@ -83,6 +83,7 @@ static char sccsid[] = "@(#)rcmd.c 8.3 (Berkeley) 3/26/94";
#ifdef USE_IN_LIBIO
# include <wchar.h>
#endif
#include <sys/uio.h>
int __ivaliduser (FILE *, u_int32_t, const char *, const char *);
@ -323,7 +324,8 @@ poll: protocol failure in circuit setup\n")) >= 0))
(void)__close(s2);
goto bad;
}
s3 = accept(s2, (struct sockaddr *)&from, &len);
s3 = TEMP_FAILURE_RETRY (accept(s2, (struct sockaddr *)&from,
&len));
switch (from.ss_family) {
case AF_INET:
rport = ntohs(((struct sockaddr_in *)&from)->sin_port);
@ -367,10 +369,17 @@ socket: protocol failure in circuit setup\n")) >= 0)
goto bad2;
}
}
(void)__write(s, locuser, strlen(locuser)+1);
(void)__write(s, remuser, strlen(remuser)+1);
(void)__write(s, cmd, strlen(cmd)+1);
n = __read(s, &c, 1);
struct iovec iov[3] =
{
[0] = { .iov_base = (void *) locuser,
.iov_len = strlen (locuser) + 1 },
[1] = { .iov_base = (void *) remuser,
.iov_len = strlen (remuser) + 1 },
[2] = { .iov_base = (void *) cmd,
.iov_len = strlen (cmd) + 1 }
};
(void) TEMP_FAILURE_RETRY (__writev (s, iov, 3));
n = TEMP_FAILURE_RETRY (__read(s, &c, 1));
if (n != 1) {
char *buf = NULL;