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2005-02-16 Andrew J. Schorr <ajschorr@alumni.princeton.edu>

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* network.c: (set_nonblocking) Should check return code from
	  fcntl(F_GETFL).
This commit is contained in:
ajs 2005-02-16 16:25:39 +00:00
parent a269d613fe
commit 42218e7125
2 changed files with 16 additions and 1 deletions
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5
lib/ChangeLog
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@ -1,3 +1,8 @@
2005-02-16 Andrew J. Schorr <ajschorr@alumni.princeton.edu>
* network.c: (set_nonblocking) Should check return code from
fcntl(F_GETFL).
2005-02-15 Andrew J. Schorr <ajschorr@alumni.princeton.edu>
* network.h: Declare new function set_nonblocking. Indicate that

12
lib/network.c
View File

@ -75,7 +75,17 @@ writen(int fd, const u_char *ptr, int nbytes)
int
set_nonblocking(int fd)
{
if (fcntl(fd, F_SETFL, (fcntl(fd, F_GETFL) | O_NONBLOCK)) < 0)
int flags;
/* According to the Single UNIX Spec, the return value for F_GETFL should
never be negative. */
if ((flags = fcntl(fd, F_GETFL)) < 0)
{
zlog_warn("fcntl(F_GETFL) failed for fd %d: %s",
fd, safe_strerror(errno));
return -1;
}
if (fcntl(fd, F_SETFL, (flags | O_NONBLOCK)) < 0)
{
zlog_warn("fcntl failed setting fd %d non-blocking: %s",
fd, safe_strerror(errno));