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1 #include <sys/socket.h> | 1 #include <sys/socket.h> |
2 #include <limits.h> | 2 #include <limits.h> |
3 #include <string.h> | 3 #include <string.h> |
4 #include <errno.h> | 4 #include <errno.h> |
5 #include "syscall.h" | 5 #include "syscall.h" |
6 #include "libc.h" | 6 #include "libc.h" |
7 | 7 |
8 ssize_t sendmsg(int fd, const struct msghdr *msg, int flags) | 8 ssize_t sendmsg(int fd, const struct msghdr* msg, int flags) { |
9 { | |
10 #if LONG_MAX > INT_MAX | 9 #if LONG_MAX > INT_MAX |
11 » struct msghdr h; | 10 struct msghdr h; |
12 » struct cmsghdr chbuf[1024/sizeof(struct cmsghdr)+1], *c; | 11 struct cmsghdr chbuf[1024 / sizeof(struct cmsghdr) + 1], *c; |
13 » if (msg) { | 12 if (msg) { |
14 » » h = *msg; | 13 h = *msg; |
15 » » h.__pad1 = h.__pad2 = 0; | 14 h.__pad1 = h.__pad2 = 0; |
16 » » msg = &h; | 15 msg = &h; |
17 » » if (h.msg_controllen) { | 16 if (h.msg_controllen) { |
18 » » » if (h.msg_controllen > 1024) { | 17 if (h.msg_controllen > 1024) { |
19 » » » » errno = ENOMEM; | 18 errno = ENOMEM; |
20 » » » » return -1; | 19 return -1; |
21 » » » } | 20 } |
22 » » » memcpy(chbuf, h.msg_control, h.msg_controllen); | 21 memcpy(chbuf, h.msg_control, h.msg_controllen); |
23 » » » h.msg_control = chbuf; | 22 h.msg_control = chbuf; |
24 » » » for (c=CMSG_FIRSTHDR(&h); c; c=CMSG_NXTHDR(&h,c)) | 23 for (c = CMSG_FIRSTHDR(&h); c; c = CMSG_NXTHDR(&h, c)) |
25 » » » » c->__pad1 = 0; | 24 c->__pad1 = 0; |
26 » » } | 25 } |
27 » } | 26 } |
28 #endif | 27 #endif |
29 » return socketcall_cp(sendmsg, fd, msg, flags, 0, 0, 0); | 28 return socketcall_cp(sendmsg, fd, msg, flags, 0, 0, 0); |
30 } | 29 } |
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