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nixio: added sendfile(), return false instead of nil for EWOULDBLOCK

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This commit is contained in:
Steven Barth 2009-02-14 10:42:48 +00:00
parent 5ff898e624
commit aa0cee169f
2 changed files with 27 additions and 3 deletions
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6
libs/nixio/src/nixio.c
View file

@ -26,7 +26,11 @@
/* pushes nil, error number and errstring on the stack */
int nixio__perror(lua_State *L) {
lua_pushnil(L);
if (errno == EAGAIN) {
lua_pushboolean(L, 0);
} else {
lua_pushnil(L);
}
lua_pushinteger(L, errno);
lua_pushstring(L, strerror(errno));
return 3;

24
libs/nixio/src/splice.c
View file

@ -20,6 +20,7 @@
#include "nixio.h"
#include <fcntl.h>
#include <sys/sendfile.h>
/* guess what sucks... */
#ifdef __UCLIBC__
@ -29,8 +30,7 @@ ssize_t splice(int __fdin, __off64_t *__offin, int __fdout,
__off64_t *__offout, size_t __len, unsigned int __flags) {
return syscall(__NR_splice, __fdin, __offin, __fdout, __offout, __len, __flags);
}
#endif
#endif /* __UCLIBC__ */
/**
* Checks whether a flag is set in the table and translates it into a bitmap
@ -60,6 +60,9 @@ static int nixio_splice_flags(lua_State *L) {
return 1;
}
/**
* splice(fd_in, fd_out, length, flags)
*/
static int nixio_splice(lua_State *L) {
int fd_in = nixio__checkfd(L, 1);
int fd_out = nixio__checkfd(L, 2);
@ -77,12 +80,29 @@ static int nixio_splice(lua_State *L) {
return 1;
}
/**
* sendfile(outfd, infd, length)
*/
static int nixio_sendfile(lua_State *L) {
int sockfd = nixio__checksockfd(L);
int infd = nixio__checkfd(L, 2);
size_t len = luaL_checkinteger(L, 3);
long spliced = sendfile(sockfd, infd, NULL, len);
if (spliced < 0) {
return nixio__perror(L);
}
lua_pushnumber(L, spliced);
return 1;
}
/* module table */
static const luaL_reg R[] = {
{"splice", nixio_splice},
{"splice_flags", nixio_splice_flags},
{"sendfile", nixio_sendfile},
{NULL, NULL}
};