prosody
dfe88a0e18fd
util-src/pposix.c

Find changesets by keywords by author, files, the commit message, revision number or hash, or revset expression.

Software / code / prosody

Comparison

util-src/pposix.c @ 6154:dfe88a0e18fd

util.pposix: Fix error reporting from posix_fallocate, it doesn't use errno (thanks pro)
author Kim Alvefur <zash@zash.se>
date Fri, 25 Apr 2014 00:36:01 +0200
parent 5927:49e3c49eb0d8
child 6155:dc3497041aca
comparison
equal deleted inserted replaced
6148:7dcd6f124c93 6154:dfe88a0e18fd
662 * */ 662 * */
663 663
664 #if _XOPEN_SOURCE >= 600 || _POSIX_C_SOURCE >= 200112L || defined(_GNU_SOURCE) 664 #if _XOPEN_SOURCE >= 600 || _POSIX_C_SOURCE >= 200112L || defined(_GNU_SOURCE)
665 int lc_fallocate(lua_State* L) 665 int lc_fallocate(lua_State* L)
666 { 666 {
667 int ret;
667 off_t offset, len; 668 off_t offset, len;
668 FILE *f = *(FILE**) luaL_checkudata(L, 1, LUA_FILEHANDLE); 669 FILE *f = *(FILE**) luaL_checkudata(L, 1, LUA_FILEHANDLE);
669 if (f == NULL) 670 if (f == NULL)
670 luaL_error(L, "attempt to use a closed file"); 671 luaL_error(L, "attempt to use a closed file");
671 672
689 #warning Only using posix_fallocate() fallback. 690 #warning Only using posix_fallocate() fallback.
690 #warning Linux fallocate() is strongly recommended if available: recompile with -D_GNU_SOURCE 691 #warning Linux fallocate() is strongly recommended if available: recompile with -D_GNU_SOURCE
691 #warning Note that posix_fallocate() will still be used on filesystems that dont support fallocate() 692 #warning Note that posix_fallocate() will still be used on filesystems that dont support fallocate()
692 #endif 693 #endif
693 694
694 if(posix_fallocate(fileno(f), offset, len) == 0) 695 ret = posix_fallocate(fileno(f), offset, len);
696 if(ret == 0)
695 { 697 {
696 lua_pushboolean(L, 1); 698 lua_pushboolean(L, 1);
697 return 1; 699 return 1;
698 } 700 }
699 else 701 else
700 { 702 {
701 lua_pushnil(L); 703 lua_pushnil(L);
702 lua_pushstring(L, strerror(errno)); 704 lua_pushstring(L, strerror(ret));
703 /* posix_fallocate() can leave a bunch of NULs at the end, so we cut that 705 /* posix_fallocate() can leave a bunch of NULs at the end, so we cut that
704 * this assumes that offset == length of the file */ 706 * this assumes that offset == length of the file */
705 ftruncate(fileno(f), offset); 707 ftruncate(fileno(f), offset);
706 return 2; 708 return 2;
707 } 709 }