diff --git a/migration/fd.c b/migration/fd.c index aab5189eac..9bf9be6acb 100644 --- a/migration/fd.c +++ b/migration/fd.c @@ -25,6 +25,29 @@ #include "io/channel-util.h" #include "trace.h" +static bool fd_is_pipe(int fd) +{ + struct stat statbuf; + + if (fstat(fd, &statbuf) == -1) { + return false; + } + + return S_ISFIFO(statbuf.st_mode); +} + +static bool migration_fd_valid(int fd) +{ + if (fd_is_socket(fd)) { + return true; + } + + if (fd_is_pipe(fd)) { + return true; + } + + return false; +} void fd_start_outgoing_migration(MigrationState *s, const char *fdname, Error **errp) { @@ -34,7 +57,7 @@ void fd_start_outgoing_migration(MigrationState *s, const char *fdname, Error ** return; } - if (!fd_is_socket(fd)) { + if (!migration_fd_valid(fd)) { warn_report("fd: migration to a file is deprecated." " Use file: instead."); } @@ -68,7 +91,7 @@ void fd_start_incoming_migration(const char *fdname, Error **errp) return; } - if (!fd_is_socket(fd)) { + if (!migration_fd_valid(fd)) { warn_report("fd: migration to a file is deprecated." " Use file: instead."); }