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migration: merge qemu_popen_cmd with qemu_popen

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There is no reason for outgoing exec migration to do popen manually
anymore (the reason used to be that we needed the FILE* to make it
non-blocking).  Use qemu_popen_cmd.

Reviewed-by: Orit Wasserman <owasserm@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
This commit is contained in:
Paolo Bonzini 2013-02-22 17:36:36 +01:00 committed by Juan Quintela
parent a0ff044b8e
commit 817b9ed5eb
3 changed files with 12 additions and 21 deletions
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1
include/migration/qemu-file.h
View File

@ -77,7 +77,6 @@ QEMUFile *qemu_fopen_ops(void *opaque, const QEMUFileOps *ops);
QEMUFile *qemu_fopen(const char *filename, const char *mode);
QEMUFile *qemu_fdopen(int fd, const char *mode);
QEMUFile *qemu_fopen_socket(int fd);
QEMUFile *qemu_popen(FILE *popen_file, const char *mode);
QEMUFile *qemu_popen_cmd(const char *command, const char *mode);
int qemu_get_fd(QEMUFile *f);
int qemu_fclose(QEMUFile *f);

10
migration-exec.c
View File

@ -59,19 +59,17 @@ static int exec_close(MigrationState *s)
void exec_start_outgoing_migration(MigrationState *s, const char *command, Error **errp)
{
FILE *f;
f = popen(command, "w");
QEMUFile *f;
f = qemu_popen_cmd(command, "w");
if (f == NULL) {
error_setg_errno(errp, errno, "failed to popen the migration target");
return;
}
s->fd = fileno(f);
s->opaque = f;
s->fd = qemu_get_fd(f);
assert(s->fd != -1);
s->opaque = qemu_popen(f, "w");
s->close = exec_close;
s->get_error = file_errno;
s->write = file_write;

22
savevm.c
View File

@ -275,11 +275,17 @@ static const QEMUFileOps stdio_pipe_write_ops = {
.close = stdio_pclose
};
QEMUFile *qemu_popen(FILE *stdio_file, const char *mode)
QEMUFile *qemu_popen_cmd(const char *command, const char *mode)
{
FILE *stdio_file;
QEMUFileStdio *s;
if (stdio_file == NULL || mode == NULL || (mode[0] != 'r' && mode[0] != 'w') || mode[1] != 0) {
stdio_file = popen(command, mode);
if (stdio_file == NULL) {
return NULL;
}
if (mode == NULL || (mode[0] != 'r' && mode[0] != 'w') || mode[1] != 0) {
fprintf(stderr, "qemu_popen: Argument validity check failed\n");
return NULL;
}
@ -296,18 +302,6 @@ QEMUFile *qemu_popen(FILE *stdio_file, const char *mode)
return s->file;
}
QEMUFile *qemu_popen_cmd(const char *command, const char *mode)
{
FILE *popen_file;
popen_file = popen(command, mode);
if(popen_file == NULL) {
return NULL;
}
return qemu_popen(popen_file, mode);
}
static const QEMUFileOps stdio_file_read_ops = {
.get_fd = stdio_get_fd,
.get_buffer = stdio_get_buffer,