* Daniel P. Berrange (berra...@redhat.com) wrote:
> Now that the exec migration backend and savevm have converted
> to use the QIOChannel based QEMUFile, there is no user remaining
> for the stdio based QEMUFile impl and it can be deleted.
>
> Signed-off-by: Daniel P. Berrange <berra...@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilb...@redhat.com>
> ---
> include/migration/qemu-file.h | 2 -
> migration/Makefile.objs | 2 +-
> migration/qemu-file-stdio.c | 195
> ------------------------------------------
> 3 files changed, 1 insertion(+), 198 deletions(-)
> delete mode 100644 migration/qemu-file-stdio.c
>
> diff --git a/include/migration/qemu-file.h b/include/migration/qemu-file.h
> index dc4b7ab..6a66735 100644
> --- a/include/migration/qemu-file.h
> +++ b/include/migration/qemu-file.h
> @@ -128,10 +128,8 @@ typedef struct QEMUFileHooks {
> } QEMUFileHooks;
>
> QEMUFile *qemu_fopen_ops(void *opaque, const QEMUFileOps *ops);
> -QEMUFile *qemu_fopen(const char *filename, const char *mode);
> QEMUFile *qemu_fopen_channel_input(QIOChannel *ioc);
> QEMUFile *qemu_fopen_channel_output(QIOChannel *ioc);
> -QEMUFile *qemu_popen_cmd(const char *command, const char *mode);
> void qemu_file_set_hooks(QEMUFile *f, const QEMUFileHooks *hooks);
> int qemu_get_fd(QEMUFile *f);
> int qemu_fclose(QEMUFile *f);
> diff --git a/migration/Makefile.objs b/migration/Makefile.objs
> index 2c71056..a127f31 100644
> --- a/migration/Makefile.objs
> +++ b/migration/Makefile.objs
> @@ -1,6 +1,6 @@
> common-obj-y += migration.o tcp.o unix.o fd.o exec.o
> common-obj-y += vmstate.o
> -common-obj-y += qemu-file.o qemu-file-stdio.o
> +common-obj-y += qemu-file.o
> common-obj-y += qemu-file-channel.o
> common-obj-y += xbzrle.o postcopy-ram.o
>
> diff --git a/migration/qemu-file-stdio.c b/migration/qemu-file-stdio.c
> deleted file mode 100644
> index 9bde9db..0000000
> --- a/migration/qemu-file-stdio.c
> +++ /dev/null
> @@ -1,195 +0,0 @@
> -/*
> - * QEMU System Emulator
> - *
> - * Copyright (c) 2003-2008 Fabrice Bellard
> - *
> - * Permission is hereby granted, free of charge, to any person obtaining a
> copy
> - * of this software and associated documentation files (the "Software"), to
> deal
> - * in the Software without restriction, including without limitation the
> rights
> - * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
> - * copies of the Software, and to permit persons to whom the Software is
> - * furnished to do so, subject to the following conditions:
> - *
> - * The above copyright notice and this permission notice shall be included in
> - * all copies or substantial portions of the Software.
> - *
> - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
> - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
> - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
> - * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
> - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
> FROM,
> - * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
> - * THE SOFTWARE.
> - */
> -#include "qemu-common.h"
> -#include "qemu/coroutine.h"
> -#include "migration/qemu-file.h"
> -
> -typedef struct QEMUFileStdio {
> - FILE *stdio_file;
> - QEMUFile *file;
> -} QEMUFileStdio;
> -
> -static int stdio_get_fd(void *opaque)
> -{
> - QEMUFileStdio *s = opaque;
> -
> - return fileno(s->stdio_file);
> -}
> -
> -static ssize_t stdio_put_buffer(void *opaque, const uint8_t *buf, int64_t
> pos,
> - size_t size)
> -{
> - QEMUFileStdio *s = opaque;
> - size_t res;
> -
> - res = fwrite(buf, 1, size, s->stdio_file);
> -
> - if (res != size) {
> - return -errno;
> - }
> - return res;
> -}
> -
> -static ssize_t stdio_get_buffer(void *opaque, uint8_t *buf, int64_t pos,
> - size_t size)
> -{
> - QEMUFileStdio *s = opaque;
> - FILE *fp = s->stdio_file;
> - ssize_t bytes;
> -
> - for (;;) {
> - clearerr(fp);
> - bytes = fread(buf, 1, size, fp);
> - if (bytes != 0 || !ferror(fp)) {
> - break;
> - }
> - if (errno == EAGAIN) {
> - yield_until_fd_readable(fileno(fp));
> - } else if (errno != EINTR) {
> - break;
> - }
> - }
> - return bytes;
> -}
> -
> -static int stdio_pclose(void *opaque)
> -{
> - QEMUFileStdio *s = opaque;
> - int ret;
> - ret = pclose(s->stdio_file);
> - if (ret == -1) {
> - ret = -errno;
> - } else if (!WIFEXITED(ret) || WEXITSTATUS(ret) != 0) {
> - /* close succeeded, but non-zero exit code: */
> - ret = -EIO; /* fake errno value */
> - }
> - g_free(s);
> - return ret;
> -}
> -
> -static int stdio_fclose(void *opaque)
> -{
> - QEMUFileStdio *s = opaque;
> - int ret = 0;
> -
> - if (qemu_file_is_writable(s->file)) {
> - int fd = fileno(s->stdio_file);
> - struct stat st;
> -
> - ret = fstat(fd, &st);
> - if (ret == 0 && S_ISREG(st.st_mode)) {
> - /*
> - * If the file handle is a regular file make sure the
> - * data is flushed to disk before signaling success.
> - */
> - ret = fsync(fd);
> - if (ret != 0) {
> - ret = -errno;
> - return ret;
> - }
> - }
> - }
> - if (fclose(s->stdio_file) == EOF) {
> - ret = -errno;
> - }
> - g_free(s);
> - return ret;
> -}
> -
> -static const QEMUFileOps stdio_pipe_read_ops = {
> - .get_fd = stdio_get_fd,
> - .get_buffer = stdio_get_buffer,
> - .close = stdio_pclose
> -};
> -
> -static const QEMUFileOps stdio_pipe_write_ops = {
> - .get_fd = stdio_get_fd,
> - .put_buffer = stdio_put_buffer,
> - .close = stdio_pclose
> -};
> -
> -QEMUFile *qemu_popen_cmd(const char *command, const char *mode)
> -{
> - FILE *stdio_file;
> - QEMUFileStdio *s;
> -
> - if (mode == NULL || (mode[0] != 'r' && mode[0] != 'w') || mode[1] != 0) {
> - fprintf(stderr, "qemu_popen: Argument validity check failed\n");
> - return NULL;
> - }
> -
> - stdio_file = popen(command, mode);
> - if (stdio_file == NULL) {
> - return NULL;
> - }
> -
> - s = g_new0(QEMUFileStdio, 1);
> -
> - s->stdio_file = stdio_file;
> -
> - if (mode[0] == 'r') {
> - s->file = qemu_fopen_ops(s, &stdio_pipe_read_ops);
> - } else {
> - s->file = qemu_fopen_ops(s, &stdio_pipe_write_ops);
> - }
> - return s->file;
> -}
> -
> -static const QEMUFileOps stdio_file_read_ops = {
> - .get_fd = stdio_get_fd,
> - .get_buffer = stdio_get_buffer,
> - .close = stdio_fclose
> -};
> -
> -static const QEMUFileOps stdio_file_write_ops = {
> - .get_fd = stdio_get_fd,
> - .put_buffer = stdio_put_buffer,
> - .close = stdio_fclose
> -};
> -
> -QEMUFile *qemu_fopen(const char *filename, const char *mode)
> -{
> - QEMUFileStdio *s;
> -
> - if (qemu_file_mode_is_not_valid(mode)) {
> - return NULL;
> - }
> -
> - s = g_new0(QEMUFileStdio, 1);
> -
> - s->stdio_file = fopen(filename, mode);
> - if (!s->stdio_file) {
> - goto fail;
> - }
> -
> - if (mode[0] == 'w') {
> - s->file = qemu_fopen_ops(s, &stdio_file_write_ops);
> - } else {
> - s->file = qemu_fopen_ops(s, &stdio_file_read_ops);
> - }
> - return s->file;
> -fail:
> - g_free(s);
> - return NULL;
> -}
> --
> 2.5.0
>
--
Dr. David Alan Gilbert / dgilb...@redhat.com / Manchester, UK
