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charset="utf-8" Simplify the exec migration code by using list utility functions. As a side effect, this also fixes a minor memory leak. On function return, "g_auto(GStrv) argv" frees argv and each element, which is wrong, because the function does not own the individual elements. To compensate, the code uses g_steal_pointer which NULLs argv and prevents the destructor from running, but argv is leaked. Fixes: cbab4face57b ("migration: convert exec backend ...") Signed-off-by: Steve Sistare Reviewed-by: Fabiano Rosas --- migration/exec.c | 57 ++++++++--------------------------------------------= ---- 1 file changed, 8 insertions(+), 49 deletions(-) diff --git a/migration/exec.c b/migration/exec.c index 47d2f3b..1518409 100644 --- a/migration/exec.c +++ b/migration/exec.c @@ -19,6 +19,7 @@ =20 #include "qemu/osdep.h" #include "qemu/error-report.h" +#include "qemu/strList.h" #include "channel.h" #include "exec.h" #include "migration.h" @@ -39,51 +40,16 @@ const char *exec_get_cmd_path(void) } #endif =20 -/* provides the length of strList */ -static int -str_list_length(strList *list) -{ - int len =3D 0; - strList *elem; - - for (elem =3D list; elem !=3D NULL; elem =3D elem->next) { - len++; - } - - return len; -} - -static void -init_exec_array(strList *command, char **argv, Error **errp) -{ - int i =3D 0; - strList *lst; - - for (lst =3D command; lst; lst =3D lst->next) { - argv[i++] =3D lst->value; - } - - argv[i] =3D NULL; - return; -} - void exec_start_outgoing_migration(MigrationState *s, strList *command, Error **errp) { - QIOChannel *ioc; - - int length =3D str_list_length(command); - g_auto(GStrv) argv =3D (char **) g_new0(const char *, length + 1); - - init_exec_array(command, argv, errp); + QIOChannel *ioc =3D NULL; + g_auto(GStrv) argv =3D strv_from_strList(command); + const char * const *args =3D (const char * const *) argv; g_autofree char *new_command =3D g_strjoinv(" ", (char **)argv); =20 trace_migration_exec_outgoing(new_command); - ioc =3D QIO_CHANNEL( - qio_channel_command_new_spawn( - (const char * const *) g_steal_pointer(&argv), - O_RDWR, - errp)); + ioc =3D QIO_CHANNEL(qio_channel_command_new_spawn(args, O_RDWR, errp)); if (!ioc) { return; } @@ -105,19 +71,12 @@ static gboolean exec_accept_incoming_migration(QIOChan= nel *ioc, void exec_start_incoming_migration(strList *command, Error **errp) { QIOChannel *ioc; - - int length =3D str_list_length(command); - g_auto(GStrv) argv =3D (char **) g_new0(const char *, length + 1); - - init_exec_array(command, argv, errp); + g_auto(GStrv) argv =3D strv_from_strList(command); + const char * const *args =3D (const char * const *) argv; g_autofree char *new_command =3D g_strjoinv(" ", (char **)argv); =20 trace_migration_exec_incoming(new_command); - ioc =3D QIO_CHANNEL( - qio_channel_command_new_spawn( - (const char * const *) g_steal_pointer(&argv), - O_RDWR, - errp)); + ioc =3D QIO_CHANNEL(qio_channel_command_new_spawn(args, O_RDWR, errp)); if (!ioc) { return; } --=20 1.8.3.1