diff options
| -rw-r--r-- | block.c | 27 | ||||
| -rw-r--r-- | block.h | 2 | ||||
| -rw-r--r-- | block/dmg.c | 2 | ||||
| -rw-r--r-- | block/raw-posix.c | 1 | ||||
| -rw-r--r-- | cutils.c | 26 | ||||
| -rw-r--r-- | qemu-common.h | 1 |
6 files changed, 48 insertions, 11 deletions
@@ -225,7 +225,7 @@ static BlockDriver *find_protocol(const char *filename) { BlockDriver *drv1; char protocol[128]; - int len; + int len = strnlen(filename, 127)+1; const char *p; #ifdef _WIN32 @@ -233,14 +233,9 @@ static BlockDriver *find_protocol(const char *filename) is_windows_drive_prefix(filename)) return bdrv_find_format("raw"); #endif - p = strchr(filename, ':'); - if (!p) + p = fill_token(protocol, len, filename, ':'); + if (*p != ':') return bdrv_find_format("raw"); - len = p - filename; - if (len > sizeof(protocol) - 1) - len = sizeof(protocol) - 1; - memcpy(protocol, filename, len); - protocol[len] = '\0'; for(drv1 = first_drv; drv1 != NULL; drv1 = drv1->next) { if (drv1->protocol_name && !strcmp(drv1->protocol_name, protocol)) @@ -414,9 +409,9 @@ int bdrv_open2(BlockDriverState *bs, const char *filename, int flags, open_flags = BDRV_O_RDWR | (flags & BDRV_O_CACHE_MASK); else open_flags = flags & ~(BDRV_O_FILE | BDRV_O_SNAPSHOT); - ret = drv->bdrv_open(bs, filename, open_flags); + ret = bdrv_open3(bs, filename, open_flags, drv); if ((ret == -EACCES || ret == -EPERM) && !(flags & BDRV_O_FILE)) { - ret = drv->bdrv_open(bs, filename, open_flags & ~BDRV_O_RDWR); + ret = bdrv_open3(bs, filename, open_flags & ~BDRV_O_RDWR, drv); bs->read_only = 1; } if (ret < 0) { @@ -461,6 +456,18 @@ int bdrv_open2(BlockDriverState *bs, const char *filename, int flags, return 0; } +int bdrv_open3(BlockDriverState *bs, const char *filename, int flags, BlockDriver *drv) +{ + char myfile[PATH_MAX]; + const char *f; + + if (!strstart(filename, "file:", &f)) { + fill_token(myfile, PATH_MAX, filename, '\0'); + return drv->bdrv_open(bs,myfile,flags); + } + return drv->bdrv_open(bs,f,flags); +} + void bdrv_close(BlockDriverState *bs) { if (bs->drv) { @@ -58,6 +58,8 @@ int bdrv_file_open(BlockDriverState **pbs, const char *filename, int flags); int bdrv_open(BlockDriverState *bs, const char *filename, int flags); int bdrv_open2(BlockDriverState *bs, const char *filename, int flags, BlockDriver *drv); +int bdrv_open3(BlockDriverState *bs, const char *filename, int flags, + BlockDriver *drv); void bdrv_close(BlockDriverState *bs); int bdrv_check(BlockDriverState *bs); int bdrv_read(BlockDriverState *bs, int64_t sector_num, diff --git a/block/dmg.c b/block/dmg.c index 262560ffd3..dd98af4376 100644 --- a/block/dmg.c +++ b/block/dmg.c @@ -94,7 +94,7 @@ dmg_close: close(s->fd); /* open raw instead */ bs->drv=bdrv_find_format("raw"); - return bs->drv->bdrv_open(bs, filename, flags); + return bdrv_open3(bs, filename, flags, bs->drv); } info_begin=read_off(s->fd); if(info_begin==0) diff --git a/block/raw-posix.c b/block/raw-posix.c index fa1a39462a..31b68ff813 100644 --- a/block/raw-posix.c +++ b/block/raw-posix.c @@ -892,6 +892,7 @@ static BlockDriver bdrv_raw = { .bdrv_getlength = raw_getlength, .create_options = raw_create_options, + .protocol_name = "file", }; /***********************************************/ @@ -24,6 +24,32 @@ #include "qemu-common.h" #include "host-utils.h" +/* + * fill first 'len' characters of 'buff' with pruned + * contents of 'str' delimited by the character 'c'. + * Escape character '\' is pruned off. + * Return pointer to the delimiting character. + */ +const char *fill_token(char *buf, const int len, const char *str, const char c) +{ + const char *p=str; + char *q=buf; + + while (p < str+len-1) { + if (*p == c) + break; + if (*p == '\\') { + p++; + if (*p == '\0') + break; + } + *q++ = *p++; + } + *q='\0'; + return p; +} + + void pstrcpy(char *buf, int buf_size, const char *str) { int c; diff --git a/qemu-common.h b/qemu-common.h index fdc367997d..5b8ac77f09 100644 --- a/qemu-common.h +++ b/qemu-common.h @@ -104,6 +104,7 @@ void qemu_get_timedate(struct tm *tm, int offset); int qemu_timedate_diff(struct tm *tm); /* cutils.c */ +const char *fill_token(char *buf, int buf_size, const char *str, char); void pstrcpy(char *buf, int buf_size, const char *str); char *pstrcat(char *buf, int buf_size, const char *s); int strstart(const char *str, const char *val, const char **ptr); |