Re: [Libguestfs] [PATCH v2] lib, lua: Fix usage of strerror_r

$ ./run guestfish -vx add-drive foo "readonly:true" libguestfs: trace: set_pgroup true libguestfs: trace: set_pgroup = 0 libguestfs: trace: add_drive "foo" "readonly:true" libguestfs: error: foo: libguestfs: trace: add_drive = -1 (error) libguestfs: trace: close libguestfs: closing guestfs handle 0x55c0bacf12a0 (state 0) Fix the usage of strerror_r by using the new wrapper defined in libguestfs-common. A similar fix is made in the Lua bindings. Fixes: https://bugzilla.redhat.com/show_bug.cgi?id=2030396 Reported-by: Masayoshi Mizuma <m.mizuma(a)jp.fujitsu.com&gt; Tested-by: Masayoshi Mizuma <m.mizuma(a)jp.fujitsu.com&gt; --- common | 2 +- generator/lua.ml | 18 ++++++++---------- lib/errors.c | 7 ++++--- 3 files changed, 13 insertions(+), 14 deletions(-) diff --git a/common b/common index a405dc599e..8fcdc2c6a1 160000 --- a/common +++ b/common @@ -1 +1 @@ -Subproject commit a405dc599e571410b83d145d02705708e1715e94 +Subproject commit 8fcdc2c6a1e438012aaa24c58fa06f9d1efc6b93 diff --git a/generator/lua.ml b/generator/lua.ml index 7b05c72e7a..0d7e63be0f 100644 --- a/generator/lua.ml +++ b/generator/lua.ml @@ -164,10 +164,9 @@ guestfs_int_lua_create (lua_State *L) return luaL_error (L, \"Guestfs.create: too many arguments\"); g = guestfs_create_flags (flags); - if (!g) { - ignore_value (strerror_r (errno, err, sizeof err)); - return luaL_error (L, \"Guestfs.create: cannot create handle: %%s\", err); - } + if (!g) + return luaL_error (L, \"Guestfs.create: cannot create handle: %%s\", + guestfs_int_strerror (errno, err, sizeof err)); guestfs_set_error_handler (g, NULL, NULL); @@ -243,10 +242,9 @@ error__tostring (lua_State *L) lua_gettable (L, 1); msg = luaL_checkstring (L, -1); - if (code) { - ignore_value (strerror_r (code, err, sizeof err)); - lua_pushfstring (L, \"%%s: %%s\", msg, err); - } + if (code) + lua_pushfstring (L, \"%%s: %%s\", msg, + guestfs_int_strerror (code, err, sizeof err)); else lua_pushstring (L, msg); @@ -655,8 +653,8 @@ get_string_list (lua_State *L, int index) strs = malloc ((len+1) * sizeof (char *)); if (strs == NULL) { - ignore_value (strerror_r (errno, err, sizeof err)); - luaL_error (L, \"get_string_list: malloc failed: %%s\", err); + luaL_error (L, \"get_string_list: malloc failed: %%s\", + guestfs_int_strerror (errno, err, sizeof err)); /*NOTREACHED*/ return NULL; } diff --git a/lib/errors.c b/lib/errors.c index bd9699eeb1..285209e44e 100644 --- a/lib/errors.c +++ b/lib/errors.c @@ -322,6 +322,7 @@ guestfs_int_perrorf (guestfs_h *g, const char *fs, ...) const int errnum = errno; int err; char buf[256]; + const char *errstr; struct error_data *error_data = get_error_data (g); va_start (args, fs); @@ -330,11 +331,11 @@ guestfs_int_perrorf (guestfs_h *g, const char *fs, ...) if (err < 0) return; - ignore_value (strerror_r (errnum, buf, sizeof buf)); + errstr = guestfs_int_strerror (errnum, buf, sizeof buf); - msg = safe_realloc (g, msg, strlen (msg) + 2 + strlen (buf) + 1); + msg = safe_realloc (g, msg, strlen (msg) + 2 + strlen (errstr) + 1); strcat (msg, ": "); - strcat (msg, buf); + strcat (msg, errstr); /* set_last_error first so that the callback can access the error * message and errno through the handle if it wishes.