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-rw-r--r--util-src/pposix.c12
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);