Software / code / prosody
Changeset
5067:7db1056c63a9
util.pposix: Try posix_fallocate() if fallocate() is unsupported by the file system
| author | Kim Alvefur <zash@zash.se> |
|---|---|
| date | Tue, 31 Jul 2012 23:38:02 +0200 |
| parents | 5066:4be7093edde9 |
| children | 5068:14d4fc5859b9 |
| files | util-src/pposix.c |
| diffstat | 1 files changed, 23 insertions(+), 12 deletions(-) [+] |
line wrap: on
line diff
--- a/util-src/pposix.c Tue Jul 31 23:34:11 2012 +0200 +++ b/util-src/pposix.c Tue Jul 31 23:38:02 2012 +0200 @@ -662,23 +662,34 @@ len = luaL_checkinteger(L, 3); #if defined(_GNU_SOURCE) - if(fallocate(fileno(f), FALLOC_FL_KEEP_SIZE, offset, len) != 0) -#elif _XOPEN_SOURCE >= 600 || _POSIX_C_SOURCE >= 200112L -#warning Using posix_fallocate() fallback. Linux fallocate() is strongly recommended if available: recompile with -D_GNU_SOURCE - if(posix_fallocate(fileno(f), offset, len) != 0) -#endif + if(fallocate(fileno(f), FALLOC_FL_KEEP_SIZE, offset, len) == 0) { -#if ! defined(_GNU_SOURCE) - /* posix_fallocate() can leave a bunch of NULs at the end, so we cut that - * this assumes that offset == length of the file */ - ftruncate(fileno(f), offset); -#endif + lua_pushboolean(L, 1); + return 1; + } + + if(errno != ENOSYS && errno != EOPNOTSUPP) + { lua_pushnil(L); lua_pushstring(L, strerror(errno)); return 2; } - lua_pushboolean(L, 1); - return 1; +#endif + + if(posix_fallocate(fileno(f), offset, len) == 0) + { + lua_pushboolean(L, 1); + return 1; + } + else + { + lua_pushnil(L); + lua_pushstring(L, strerror(errno)); + /* posix_fallocate() can leave a bunch of NULs at the end, so we cut that + * this assumes that offset == length of the file */ + ftruncate(fileno(f), offset); + return 2; + } } #endif
