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qemu-img: Print available options with -o ? 

This patch adds a small help text to each of the options in the block drivers
which can be displayed by using qemu-img create -f fmt -o ?

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Kevin Wolf 2009-06-04 15:39:38 +02:00 committed by Blue Swirl
parent f425c27872
commit db08adf526
10 changed files with 110 additions and 19 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
block/cow.c
View File

@ -262,8 +262,16 @@ static void cow_flush(BlockDriverState *bs)
}
static QEMUOptionParameter cow_create_options[] = {
{ BLOCK_OPT_SIZE, OPT_SIZE },
{ BLOCK_OPT_BACKING_FILE, OPT_STRING },
{
.name = BLOCK_OPT_SIZE,
.type = OPT_SIZE,
.help = "Virtual disk size"
},
{
.name = BLOCK_OPT_BACKING_FILE,
.type = OPT_STRING,
.help = "File name of a base image"
},
{ NULL }
};

18
block/qcow.c
View File

@ -909,9 +909,21 @@ static int qcow_get_info(BlockDriverState *bs, BlockDriverInfo *bdi)
static QEMUOptionParameter qcow_create_options[] = {
{ BLOCK_OPT_SIZE, OPT_SIZE },
{ BLOCK_OPT_BACKING_FILE, OPT_STRING },
{ BLOCK_OPT_ENCRYPT, OPT_FLAG },
{
.name = BLOCK_OPT_SIZE,
.type = OPT_SIZE,
.help = "Virtual disk size"
},
{
.name = BLOCK_OPT_BACKING_FILE,
.type = OPT_STRING,
.help = "File name of a base image"
},
{
.name = BLOCK_OPT_ENCRYPT,
.type = OPT_FLAG,
.help = "Encrypt the image"
},
{ NULL }
};

30
block/qcow2.c
View File

@ -2981,11 +2981,31 @@ static int qcow_get_buffer(BlockDriverState *bs, uint8_t *buf,
}
static QEMUOptionParameter qcow_create_options[] = {
{ BLOCK_OPT_SIZE, OPT_SIZE },
{ BLOCK_OPT_BACKING_FILE, OPT_STRING },
{ BLOCK_OPT_BACKING_FMT, OPT_STRING },
{ BLOCK_OPT_ENCRYPT, OPT_FLAG },
{ BLOCK_OPT_CLUSTER_SIZE, OPT_SIZE },
{
.name = BLOCK_OPT_SIZE,
.type = OPT_SIZE,
.help = "Virtual disk size"
},
{
.name = BLOCK_OPT_BACKING_FILE,
.type = OPT_STRING,
.help = "File name of a base image"
},
{
.name = BLOCK_OPT_BACKING_FMT,
.type = OPT_STRING,
.help = "Image format of the base image"
},
{
.name = BLOCK_OPT_ENCRYPT,
.type = OPT_FLAG,
.help = "Encrypt the image"
},
{
.name = BLOCK_OPT_CLUSTER_SIZE,
.type = OPT_SIZE,
.help = "qcow2 cluster size"
},
{ NULL }
};

6
block/raw-posix.c
View File

@ -858,7 +858,11 @@ static void raw_flush(BlockDriverState *bs)
static QEMUOptionParameter raw_create_options[] = {
{ BLOCK_OPT_SIZE, OPT_SIZE },
{
.name = BLOCK_OPT_SIZE,
.type = OPT_SIZE,
.help = "Virtual disk size"
},
{ NULL }
};

6
block/raw-win32.c
View File

@ -234,7 +234,11 @@ static int raw_create(const char *filename, QEMUOptionParameter *options)
}
static QEMUOptionParameter raw_create_options[] = {
{ BLOCK_OPT_SIZE, OPT_SIZE },
{
.name = BLOCK_OPT_SIZE,
.type = OPT_SIZE,
.help = "Virtual disk size"
},
{ NULL }
};

18
block/vmdk.c
View File

@ -828,9 +828,21 @@ static void vmdk_flush(BlockDriverState *bs)
static QEMUOptionParameter vmdk_create_options[] = {
{ BLOCK_OPT_SIZE, OPT_SIZE },
{ BLOCK_OPT_BACKING_FILE, OPT_STRING },
{ BLOCK_OPT_COMPAT6, OPT_FLAG },
{
.name = BLOCK_OPT_SIZE,
.type = OPT_SIZE,
.help = "Virtual disk size"
},
{
.name = BLOCK_OPT_BACKING_FILE,
.type = OPT_STRING,
.help = "File name of a base image"
},
{
.name = BLOCK_OPT_COMPAT6,
.type = OPT_FLAG,
.help = "VMDK version 6 image"
},
{ NULL }
};

6
block/vpc.c
View File

@ -594,7 +594,11 @@ static void vpc_close(BlockDriverState *bs)
}
static QEMUOptionParameter vpc_create_options[] = {
{ "size", OPT_SIZE },
{
.name = BLOCK_OPT_SIZE,
.type = OPT_SIZE,
.help = "Virtual disk size"
},
{ NULL }
};

18
qemu-img.c
View File

@ -281,15 +281,17 @@ static int img_create(int argc, char **argv)
break;
}
}
if (optind >= argc)
help();
filename = argv[optind++];
/* Find driver and parse its options */
drv = bdrv_find_format(fmt);
if (!drv)
error("Unknown file format '%s'", fmt);
if (options && !strcmp(options, "?")) {
print_option_help(drv->create_options);
return 0;
}
if (options) {
param = parse_option_parameters(options, drv->create_options, param);
if (param == NULL) {
@ -299,6 +301,11 @@ static int img_create(int argc, char **argv)
param = parse_option_parameters("", drv->create_options, param);
}
/* Get the filename */
if (optind >= argc)
help();
filename = argv[optind++];
/* Add size to parameters */
if (optind < argc) {
set_option_parameter(param, BLOCK_OPT_SIZE, argv[optind++]);
@ -596,6 +603,11 @@ static int img_convert(int argc, char **argv)
if (!drv)
error("Unknown file format '%s'", out_fmt);
if (options && !strcmp(options, "?")) {
print_option_help(drv->create_options);
return 0;
}
if (options) {
param = parse_option_parameters(options, drv->create_options, param);
if (param == NULL) {

13
qemu-option.c
View File

@ -347,3 +347,16 @@ void print_option_parameters(QEMUOptionParameter *list)
list++;
}
}
/*
* Prints an overview of all available options
*/
void print_option_help(QEMUOptionParameter *list)
{
printf("Supported options:\n");
while (list && list->name) {
printf("%-16s %s\n", list->name,
list->help ? list->help : "No description available");
list++;
}
}

2
qemu-option.h
View File

@ -40,6 +40,7 @@ typedef struct QEMUOptionParameter {
uint64_t n;
char* s;
} value;
const char *help;
} QEMUOptionParameter;
@ -63,5 +64,6 @@ QEMUOptionParameter *parse_option_parameters(const char *param,
QEMUOptionParameter *list, QEMUOptionParameter *dest);
void free_option_parameters(QEMUOptionParameter *list);
void print_option_parameters(QEMUOptionParameter *list);
void print_option_help(QEMUOptionParameter *list);
#endif