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Change -drive parsing so that paths don't have to be double-escaped (Laurent Vivier, Johannes Schindelin)

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3909 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
balrog 2008-01-14 02:56:53 +00:00
parent 5697ff6b88
commit 609497ab3c
2 changed files with 64 additions and 47 deletions
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3
qemu-doc.texi
View File

@ -234,7 +234,8 @@ Define a new drive. Valid options are:
@table @code
@item file=@var{file}
This option defines which disk image (@pxref{disk_images}) to use with
this drive.
this drive. If the filename contains comma, you must double it
(for instance, "file=my,,file" to use file "my,file").
@item if=@var{interface}
This option defines on which type on interface the drive is connected.
Available types are: ide, scsi, sd, mtd, floppy, pflash.

108
vl.c
View File

@ -231,7 +231,10 @@ unsigned int nb_prom_envs = 0;
const char *prom_envs[MAX_PROM_ENVS];
#endif
int nb_drives_opt;
char drives_opt[MAX_DRIVES][1024];
struct drive_opt {
const char *file;
char opt[1024];
} drives_opt[MAX_DRIVES];
static CPUState *cur_cpu;
static CPUState *next_cpu;
@ -4581,24 +4584,33 @@ static int net_socket_mcast_init(VLANState *vlan, const char *host_str)
}
static const char *get_word(char *buf, int buf_size, const char *p)
static const char *get_opt_name(char *buf, int buf_size, const char *p)
{
char *q;
q = buf;
while (*p != '\0' && *p != '=') {
if (q && (q - buf) < buf_size - 1)
*q++ = *p;
p++;
}
if (q)
*q = '\0';
return p;
}
static const char *get_opt_value(char *buf, int buf_size, const char *p)
{
char *q;
int substring;
substring = 0;
q = buf;
while (*p != '\0') {
if (*p == '\\') {
p++;
if (*p == '\0')
if (*p == ',') {
if (*(p + 1) != ',')
break;
} else if (*p == '\"') {
substring = !substring;
p++;
continue;
} else if (!substring && (*p == ',' || *p == '='))
break;
}
if (q && (q - buf) < buf_size - 1)
*q++ = *p;
p++;
@ -4617,15 +4629,15 @@ static int get_param_value(char *buf, int buf_size,
p = str;
for(;;) {
p = get_word(option, sizeof(option), p);
p = get_opt_name(option, sizeof(option), p);
if (*p != '=')
break;
p++;
if (!strcmp(tag, option)) {
(void)get_word(buf, buf_size, p);
(void)get_opt_value(buf, buf_size, p);
return strlen(buf);
} else {
p = get_word(NULL, 0, p);
p = get_opt_value(NULL, 0, p);
}
if (*p != ',')
break;
@ -4642,7 +4654,7 @@ static int check_params(char *buf, int buf_size,
p = str;
for(;;) {
p = get_word(buf, buf_size, p);
p = get_opt_name(buf, buf_size, p);
if (*p != '=')
return -1;
p++;
@ -4651,7 +4663,7 @@ static int check_params(char *buf, int buf_size,
break;
if (params[i] == NULL)
return -1;
p = get_word(NULL, 0, p);
p = get_opt_value(NULL, 0, p);
if (*p != ',')
break;
p++;
@ -4810,18 +4822,18 @@ void do_info_network(void)
}
}
#define HD_ALIAS "file=\"%s\",index=%d,media=disk"
#define HD_ALIAS "index=%d,media=disk"
#ifdef TARGET_PPC
#define CDROM_ALIAS "index=1,media=cdrom"
#else
#define CDROM_ALIAS "index=2,media=cdrom"
#endif
#define FD_ALIAS "index=%d,if=floppy"
#define PFLASH_ALIAS "file=\"%s\",if=pflash"
#define MTD_ALIAS "file=\"%s\",if=mtd"
#define PFLASH_ALIAS "if=pflash"
#define MTD_ALIAS "if=mtd"
#define SD_ALIAS "index=0,if=sd"
static int drive_add(const char *fmt, ...)
static int drive_add(const char *file, const char *fmt, ...)
{
va_list ap;
@ -4830,8 +4842,10 @@ static int drive_add(const char *fmt, ...)
exit(1);
}
drives_opt[nb_drives_opt].file = file;
va_start(ap, fmt);
vsnprintf(drives_opt[nb_drives_opt], sizeof(drives_opt[0]), fmt, ap);
vsnprintf(drives_opt[nb_drives_opt].opt,
sizeof(drives_opt[0].opt), fmt, ap);
va_end(ap);
return nb_drives_opt++;
@ -4866,7 +4880,8 @@ int drive_get_max_bus(BlockInterfaceType type)
return max_bus;
}
static int drive_init(const char *str, int snapshot, QEMUMachine *machine)
static int drive_init(struct drive_opt *arg, int snapshot,
QEMUMachine *machine)
{
char buf[128];
char file[1024];
@ -4881,6 +4896,7 @@ static int drive_init(const char *str, int snapshot, QEMUMachine *machine)
int index;
int cache;
int bdrv_flags;
char *str = arg->opt;
char *params[] = { "bus", "unit", "if", "index", "cyls", "heads",
"secs", "trans", "media", "snapshot", "file",
"cache", NULL };
@ -5051,7 +5067,10 @@ static int drive_init(const char *str, int snapshot, QEMUMachine *machine)
}
}
get_param_value(file, sizeof(file), "file", str);
if (arg->file == NULL)
get_param_value(file, sizeof(file), "file", str);
else
pstrcpy(file, sizeof(file), arg->file);
/* compute bus and unit according index */
@ -8163,7 +8182,7 @@ int main(int argc, char **argv)
break;
r = argv[optind];
if (r[0] != '-') {
hda_index = drive_add(HD_ALIAS, argv[optind++], 0);
hda_index = drive_add(argv[optind++], HD_ALIAS, 0);
} else {
const QEMUOption *popt;
@ -8224,11 +8243,11 @@ int main(int argc, char **argv)
break;
case QEMU_OPTION_hda:
if (cyls == 0)
hda_index = drive_add(HD_ALIAS, optarg, 0);
hda_index = drive_add(optarg, HD_ALIAS, 0);
else
hda_index = drive_add(HD_ALIAS
hda_index = drive_add(optarg, HD_ALIAS
",cyls=%d,heads=%d,secs=%d%s",
optarg, 0, cyls, heads, secs,
0, cyls, heads, secs,
translation == BIOS_ATA_TRANSLATION_LBA ?
",trans=lba" :
translation == BIOS_ATA_TRANSLATION_NONE ?
@ -8237,19 +8256,19 @@ int main(int argc, char **argv)
case QEMU_OPTION_hdb:
case QEMU_OPTION_hdc:
case QEMU_OPTION_hdd:
drive_add(HD_ALIAS, optarg, popt->index - QEMU_OPTION_hda);
drive_add(optarg, HD_ALIAS, popt->index - QEMU_OPTION_hda);
break;
case QEMU_OPTION_drive:
drive_add("%s", optarg);
drive_add(NULL, "%s", optarg);
break;
case QEMU_OPTION_mtdblock:
drive_add(MTD_ALIAS, optarg);
drive_add(optarg, MTD_ALIAS);
break;
case QEMU_OPTION_sd:
drive_add("file=\"%s\"," SD_ALIAS, optarg);
drive_add(optarg, SD_ALIAS);
break;
case QEMU_OPTION_pflash:
drive_add(PFLASH_ALIAS, optarg);
drive_add(optarg, PFLASH_ALIAS);
break;
case QEMU_OPTION_snapshot:
snapshot = 1;
@ -8289,12 +8308,10 @@ int main(int argc, char **argv)
exit(1);
}
if (hda_index != -1)
snprintf(drives_opt[hda_index] +
strlen(drives_opt[hda_index]),
sizeof(drives_opt[0]) -
strlen(drives_opt[hda_index]),
",cyls=%d,heads=%d,secs=%d%s",
cyls, heads, secs,
snprintf(drives_opt[hda_index].opt,
sizeof(drives_opt[hda_index].opt),
HD_ALIAS ",cyls=%d,heads=%d,secs=%d%s",
0, cyls, heads, secs,
translation == BIOS_ATA_TRANSLATION_LBA ?
",trans=lba" :
translation == BIOS_ATA_TRANSLATION_NONE ?
@ -8317,7 +8334,7 @@ int main(int argc, char **argv)
kernel_cmdline = optarg;
break;
case QEMU_OPTION_cdrom:
drive_add("file=\"%s\"," CDROM_ALIAS, optarg);
drive_add(optarg, CDROM_ALIAS);
break;
case QEMU_OPTION_boot:
boot_devices = optarg;
@ -8352,8 +8369,7 @@ int main(int argc, char **argv)
break;
case QEMU_OPTION_fda:
case QEMU_OPTION_fdb:
drive_add("file=\"%s\"," FD_ALIAS, optarg,
popt->index - QEMU_OPTION_fda);
drive_add(optarg, FD_ALIAS, popt->index - QEMU_OPTION_fda);
break;
#ifdef TARGET_I386
case QEMU_OPTION_no_fd_bootchk:
@ -8822,22 +8838,22 @@ int main(int argc, char **argv)
/* we always create the cdrom drive, even if no disk is there */
if (nb_drives_opt < MAX_DRIVES)
drive_add(CDROM_ALIAS);
drive_add(NULL, CDROM_ALIAS);
/* we always create at least one floppy */
if (nb_drives_opt < MAX_DRIVES)
drive_add(FD_ALIAS, 0);
drive_add(NULL, FD_ALIAS, 0);
/* we always create one sd slot, even if no card is in it */
if (nb_drives_opt < MAX_DRIVES)
drive_add(SD_ALIAS);
drive_add(NULL, SD_ALIAS);
/* open the virtual block devices */
for(i = 0; i < nb_drives_opt; i++)
if (drive_init(drives_opt[i], snapshot, machine) == -1)
if (drive_init(&drives_opt[i], snapshot, machine) == -1)
exit(1);
register_savevm("timer", 0, 2, timer_save, timer_load, NULL);