diff options
| -rw-r--r-- | util-src/pposix.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/util-src/pposix.c b/util-src/pposix.c index 73e0d6e3..9b3e97eb 100644 --- a/util-src/pposix.c +++ b/util-src/pposix.c @@ -674,6 +674,7 @@ int lc_meminfo(lua_State* L) #if _XOPEN_SOURCE >= 600 || _POSIX_C_SOURCE >= 200112L || defined(_GNU_SOURCE) int lc_fallocate(lua_State* L) { + int ret; off_t offset, len; FILE *f = *(FILE**) luaL_checkudata(L, 1, LUA_FILEHANDLE); if (f == NULL) @@ -683,11 +684,15 @@ int lc_fallocate(lua_State* L) len = luaL_checkinteger(L, 3); #if defined(__linux__) && defined(_GNU_SOURCE) - if(fallocate(fileno(f), FALLOC_FL_KEEP_SIZE, offset, len) == 0) + errno = 0; + ret = fallocate(fileno(f), FALLOC_FL_KEEP_SIZE, offset, len); + if(ret == 0) { lua_pushboolean(L, 1); return 1; } + /* Some old versions of Linux apparently use the return value instead of errno */ + if(errno == 0) errno = ret; if(errno != ENOSYS && errno != EOPNOTSUPP) { @@ -701,7 +706,8 @@ int lc_fallocate(lua_State* L) #warning Note that posix_fallocate() will still be used on filesystems that dont support fallocate() #endif - if(posix_fallocate(fileno(f), offset, len) == 0) + ret = posix_fallocate(fileno(f), offset, len); + if(ret == 0) { lua_pushboolean(L, 1); return 1; @@ -709,7 +715,7 @@ int lc_fallocate(lua_State* L) else { lua_pushnil(L); - lua_pushstring(L, strerror(errno)); + lua_pushstring(L, strerror(ret)); /* 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); |