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-rw-r--r--ioops.c17
1 files changed, 8 insertions, 9 deletions
diff --git a/ioops.c b/ioops.c
index 4ac0f3a..07cce9c 100644
--- a/ioops.c
+++ b/ioops.c
@@ -17,16 +17,15 @@
int open_or_die(const char *file, int flags)
{
int ret = open(file, flags);
- if (ret < 0)
+ if (unlikely(ret < 0))
panic("Cannot open file %s! %s.\n", file, strerror(errno));
-
return ret;
}
int open_or_die_m(const char *file, int flags, mode_t mode)
{
int ret = open(file, flags, mode);
- if (ret < 0)
+ if (unlikely(ret < 0))
panic("Cannot open or create file %s! %s.", file, strerror(errno));
return ret;
}
@@ -55,7 +54,7 @@ void create_or_die(const char *file, mode_t mode)
void pipe_or_die(int pipefd[2], int flags)
{
int ret = pipe2(pipefd, flags);
- if (ret < 0)
+ if (unlikely(ret < 0))
panic("Cannot create pipe2 event fd! %s.\n", strerror(errno));
}
@@ -65,7 +64,7 @@ int tun_open_or_die(char *name, int type)
short flags;
struct ifreq ifr;
- if (!name)
+ if (unlikely(!name))
panic("No name provided for tundev!\n");
fd = open_or_die("/dev/net/tun", O_RDWR);
@@ -75,11 +74,11 @@ int tun_open_or_die(char *name, int type)
strlcpy(ifr.ifr_name, name, IFNAMSIZ);
ret = ioctl(fd, TUNSETIFF, &ifr);
- if (ret < 0)
+ if (unlikely(ret < 0))
panic("ioctl screwed up! %s.\n", strerror(errno));
ret = fcntl(fd, F_SETFL, fcntl(fd, F_GETFL) | O_NONBLOCK);
- if (ret < 0)
+ if (unlikely(ret < 0))
panic("fctnl screwed up! %s.\n", strerror(errno));
flags = device_get_flags(name);
@@ -92,7 +91,7 @@ int tun_open_or_die(char *name, int type)
ssize_t read_or_die(int fd, void *buf, size_t len)
{
ssize_t ret = read(fd, buf, len);
- if (ret < 0) {
+ if (unlikely(ret < 0)) {
if (errno == EPIPE)
die();
panic("Cannot read from descriptor! %s.\n", strerror(errno));
@@ -104,7 +103,7 @@ ssize_t read_or_die(int fd, void *buf, size_t len)
ssize_t write_or_die(int fd, const void *buf, size_t len)
{
ssize_t ret = write(fd, buf, len);
- if (ret < 0) {
+ if (unlikely(ret < 0)) {
if (errno == EPIPE)
die();
panic("Cannot write to descriptor! %s.", strerror(errno));