block.c (dabfa6cc2e2a06269026fcb42772894f67bd0c3e) block.c (d34682cd4a06efe9ee3fc8cb7e8a0ea445299989)
1/*
2 * QEMU System Emulator block driver
3 *
4 * Copyright (c) 2003 Fabrice Bellard
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights

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478
479 ret = bdrv_create(drv, filename, options, &local_err);
480 if (error_is_set(&local_err)) {
481 error_propagate(errp, local_err);
482 }
483 return ret;
484}
485
1/*
2 * QEMU System Emulator block driver
3 *
4 * Copyright (c) 2003 Fabrice Bellard
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights

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478
479 ret = bdrv_create(drv, filename, options, &local_err);
480 if (error_is_set(&local_err)) {
481 error_propagate(errp, local_err);
482 }
483 return ret;
484}
485
486static int bdrv_refresh_limits(BlockDriverState *bs)
487{
488 BlockDriver *drv = bs->drv;
489
490 memset(&bs->bl, 0, sizeof(bs->bl));
491
492 if (drv && drv->bdrv_refresh_limits) {
493 return drv->bdrv_refresh_limits(bs);
494 }
495
496 return 0;
497}
498
486/*
487 * Create a uniquely-named empty temporary file.
488 * Return 0 upon success, otherwise a negative errno value.
489 */
490int get_tmp_filename(char *filename, int size)
491{
492#ifdef _WIN32
493 char temp_dir[MAX_PATH];

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867 }
868
869 ret = refresh_total_sectors(bs, bs->total_sectors);
870 if (ret < 0) {
871 error_setg_errno(errp, -ret, "Could not refresh total sector count");
872 goto free_and_fail;
873 }
874
499/*
500 * Create a uniquely-named empty temporary file.
501 * Return 0 upon success, otherwise a negative errno value.
502 */
503int get_tmp_filename(char *filename, int size)
504{
505#ifdef _WIN32
506 char temp_dir[MAX_PATH];

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880 }
881
882 ret = refresh_total_sectors(bs, bs->total_sectors);
883 if (ret < 0) {
884 error_setg_errno(errp, -ret, "Could not refresh total sector count");
885 goto free_and_fail;
886 }
887
888 bdrv_refresh_limits(bs);
889
875#ifndef _WIN32
876 if (bs->is_temporary) {
877 assert(bs->filename[0] != '\0');
878 unlink(bs->filename);
879 }
880#endif
881 return 0;
882

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1080 return ret;
1081 }
1082
1083 if (bs->backing_hd->file) {
1084 pstrcpy(bs->backing_file, sizeof(bs->backing_file),
1085 bs->backing_hd->file->filename);
1086 }
1087
890#ifndef _WIN32
891 if (bs->is_temporary) {
892 assert(bs->filename[0] != '\0');
893 unlink(bs->filename);
894 }
895#endif
896 return 0;
897

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1095 return ret;
1096 }
1097
1098 if (bs->backing_hd->file) {
1099 pstrcpy(bs->backing_file, sizeof(bs->backing_file),
1100 bs->backing_hd->file->filename);
1101 }
1102
1103 /* Recalculate the BlockLimits with the backing file */
1104 bdrv_refresh_limits(bs);
1105
1088 return 0;
1089}
1090
1091/*
1092 * Opens a disk image whose options are given as BlockdevRef in another block
1093 * device's options.
1094 *
1095 * If force_raw is true, bdrv_file_open() will be used, thereby preventing any

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1107}
1108
1109/*
1110 * Opens a disk image whose options are given as BlockdevRef in another block
1111 * device's options.
1112 *
1113 * If force_raw is true, bdrv_file_open() will be used, thereby preventing any

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