X-Git-Url: https://git.enpas.org/?a=blobdiff_plain;f=util-src%2Fpposix.c;h=df814c2899fc98d90ccfed116cd1ada3cd3a2d1d;hb=8551bf5a2ae3d1c8bc47f052f531902fe4f0d919;hp=4fb1fb56b5346f062d9310b70a8788c177320a09;hpb=f69b95e5858464fb3a6a43244d254eb9db112fdc;p=prosody.git

diff --git a/util-src/pposix.c b/util-src/pposix.c
index 4fb1fb56..df814c28 100644
--- a/util-src/pposix.c
+++ b/util-src/pposix.c
@@ -664,6 +664,7 @@ 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)
@@ -673,11 +674,15 @@ 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)
 	{
@@ -691,7 +696,8 @@ 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;
@@ -699,7 +705,7 @@ 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);