Author: gahr (ports committer)
Date: Tue Jun 13 13:26:50 2017
New Revision: 319898
URL: https://svnweb.freebsd.org/changeset/base/319898
Log:
Handle partial writes
Reported by: ed
Reviewed by: cognet
Approved by: cognet
Modified:
head/usr.bin/yes/yes.c
Modified: head/usr.bin/yes/yes.c
==============================================================================
--- head/usr.bin/yes/yes.c Tue Jun 13 12:35:01 2017 (r319897)
+++ head/usr.bin/yes/yes.c Tue Jun 13 13:26:50 2017 (r319898)
@@ -55,6 +55,8 @@ main(int argc, char **argv)
char * exp = y;
size_t buflen = 0;
size_t explen = sizeof(y);
+ size_t more;
+ ssize_t ret;
if (caph_limit_stdio() < 0 || (cap_enter() < 0 && errno != ENOSYS))
err(1, "capsicum");
@@ -77,8 +79,10 @@ main(int argc, char **argv)
explen = buflen;
}
- while (write(STDOUT_FILENO, exp, explen) > 0)
- ;
+ more = explen;
+ while ((ret = write(STDOUT_FILENO, exp + (explen - more), more)) > 0)
+ if ((more -= ret) == 0)
+ more = explen;
err(1, "stdout");
/*NOTREACHED*/
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