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lib: Avoid using assignments within checks

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Signed-off-by: Donatas Abraitis <donatas.abraitis@gmail.com>
This commit is contained in:
Donatas Abraitis 2021-06-29 14:43:16 +03:00
parent 11dbcdd35c
commit 0e2d70760d
8 changed files with 42 additions and 33 deletions
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24
lib/buffer.c
View File

@ -357,7 +357,8 @@ buffer_status_t buffer_flush_window(struct buffer *b, int fd, int width,
iov_size =
((iov_index > IOV_MAX) ? IOV_MAX : iov_index);
if ((nbytes = writev(fd, c_iov, iov_size)) < 0) {
nbytes = writev(fd, c_iov, iov_size);
if (nbytes < 0) {
flog_err(EC_LIB_SOCKET,
"%s: writev to fd %d failed: %s",
__func__, fd, safe_strerror(errno));
@ -370,7 +371,8 @@ buffer_status_t buffer_flush_window(struct buffer *b, int fd, int width,
}
}
#else /* IOV_MAX */
if ((nbytes = writev(fd, iov, iov_index)) < 0)
nbytes = writev(fd, iov, iov_index);
if (nbytes < 0)
flog_err(EC_LIB_SOCKET, "%s: writev to fd %d failed: %s",
__func__, fd, safe_strerror(errno));
#endif /* IOV_MAX */
@ -472,13 +474,17 @@ buffer_status_t buffer_write(struct buffer *b, int fd, const void *p,
/* Buffer is not empty, so do not attempt to write the new data.
*/
nbytes = 0;
else if ((nbytes = write(fd, p, size)) < 0) {
if (ERRNO_IO_RETRY(errno))
nbytes = 0;
else {
flog_err(EC_LIB_SOCKET, "%s: write error on fd %d: %s",
__func__, fd, safe_strerror(errno));
return BUFFER_ERROR;
else {
nbytes = write(fd, p, size);
if (nbytes < 0) {
if (ERRNO_IO_RETRY(errno))
nbytes = 0;
else {
flog_err(EC_LIB_SOCKET,
"%s: write error on fd %d: %s",
__func__, fd, safe_strerror(errno));
return BUFFER_ERROR;
}
}
}
/* Add any remaining data to the buffer. */

3
lib/csv.c
View File

@ -641,7 +641,8 @@ static int get_memory_usage(pid_t pid)
char *vm;
snprintf(status_child, sizeof(status_child), "/proc/%d/status", pid);
if ((fd = open(status_child, O_RDONLY)) < 0)
fd = open(status_child, O_RDONLY);
if (fd < 0)
return -1;
read(fd, buf, 4095);

3
lib/network.c
View File

@ -78,7 +78,8 @@ int set_nonblocking(int fd)
/* According to the Single UNIX Spec, the return value for F_GETFL
should
never be negative. */
if ((flags = fcntl(fd, F_GETFL)) < 0) {
flags = fcntl(fd, F_GETFL);
if (flags < 0) {
flog_err(EC_LIB_SYSTEM_CALL,
"fcntl(F_GETFL) failed for fd %d: %s", fd,
safe_strerror(errno));

14
lib/ntop.c
View File

@ -40,14 +40,18 @@ static inline void putbyte(uint8_t bytex, char **posx)
bool zero = false;
int byte = bytex, tmp, a, b;
if ((tmp = byte - 200) >= 0) {
tmp = byte - 200;
if (tmp >= 0) {
*pos++ = '2';
zero = true;
byte = tmp;
} else if ((tmp = byte - 100) >= 0) {
*pos++ = '1';
zero = true;
byte = tmp;
} else {
tmp = byte - 100;
if (tmp >= 0) {
*pos++ = '1';
zero = true;
byte = tmp;
}
}
/* make sure the compiler knows the value range of "byte" */

3
lib/prefix.c
View File

@ -1034,7 +1034,8 @@ const char *prefix2str(union prefixconstptr pu, char *str, int size)
l = strlen(buf);
buf[l++] = '/';
byte = p->prefixlen;
if ((tmp = p->prefixlen - 100) >= 0) {
tmp = p->prefixlen - 100;
if (tmp >= 0) {
buf[l++] = '1';
z = true;
byte = tmp;

16
lib/sockopt.c
View File

@ -379,14 +379,14 @@ static int setsockopt_ipv4_ifindex(int sock, ifindex_t val)
int ret;
#if defined(IP_PKTINFO)
if ((ret = setsockopt(sock, IPPROTO_IP, IP_PKTINFO, &val, sizeof(val)))
< 0)
ret = setsockopt(sock, IPPROTO_IP, IP_PKTINFO, &val, sizeof(val));
if (ret < 0)
flog_err(EC_LIB_SOCKET,
"Can't set IP_PKTINFO option for fd %d to %d: %s",
sock, val, safe_strerror(errno));
#elif defined(IP_RECVIF)
if ((ret = setsockopt(sock, IPPROTO_IP, IP_RECVIF, &val, sizeof(val)))
< 0)
ret = setsockopt(sock, IPPROTO_IP, IP_RECVIF, &val, sizeof(val));
if (ret < 0)
flog_err(EC_LIB_SOCKET,
"Can't set IP_RECVIF option for fd %d to %d: %s", sock,
val, safe_strerror(errno));
@ -639,12 +639,8 @@ int sockopt_tcp_signature_ext(int sock, union sockunion *su, uint16_t prefixlen,
#endif /* GNU_LINUX */
if ((ret = setsockopt(sock, IPPROTO_TCP, optname, &md5sig,
sizeof(md5sig)))
< 0) {
/* ENOENT is harmless. It is returned when we clear a password
for which
one was not previously set. */
ret = setsockopt(sock, IPPROTO_TCP, optname, &md5sig, sizeof(md5sig));
if (ret < 0) {
if (ENOENT == errno)
ret = 0;
else

8
lib/stream.c
View File

@ -1097,7 +1097,8 @@ ssize_t stream_read_try(struct stream *s, int fd, size_t size)
return -1;
}
if ((nbytes = read(fd, s->data + s->endp, size)) >= 0) {
nbytes = read(fd, s->data + s->endp, size);
if (nbytes >= 0) {
s->endp += nbytes;
return nbytes;
}
@ -1126,9 +1127,8 @@ ssize_t stream_recvfrom(struct stream *s, int fd, size_t size, int flags,
return -1;
}
if ((nbytes = recvfrom(fd, s->data + s->endp, size, flags, from,
fromlen))
>= 0) {
nbytes = recvfrom(fd, s->data + s->endp, size, flags, from, fromlen);
if (nbytes >= 0) {
s->endp += nbytes;
return nbytes;
}

4
lib/zclient.c
View File

@ -3798,7 +3798,8 @@ static int zclient_read(struct thread *thread)
zclient->t_read = NULL;
/* Read zebra header (if we don't have it already). */
if ((already = stream_get_endp(zclient->ibuf)) < ZEBRA_HEADER_SIZE) {
already = stream_get_endp(zclient->ibuf);
if (already < ZEBRA_HEADER_SIZE) {
ssize_t nbyte;
if (((nbyte = stream_read_try(zclient->ibuf, zclient->sock,
ZEBRA_HEADER_SIZE - already))
@ -3811,7 +3812,6 @@ static int zclient_read(struct thread *thread)
return zclient_failed(zclient);
}
if (nbyte != (ssize_t)(ZEBRA_HEADER_SIZE - already)) {
/* Try again later. */
zclient_event(ZCLIENT_READ, zclient);
return 0;
}