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| author | Jake Wires <jwires@xensource.com> | 2007-02-23 17:26:07 -0800 |
|---|---|---|
| committer | Jake Wires <jwires@xensource.com> | 2007-02-23 17:26:07 -0800 |
| commit | a3d17a18e59a22c7be99d6e82910af29568d0057 (patch) | |
| tree | f87c22e4b2de1edb7ebd3212fedc7431029d33ca /tools/blktap/lib | |
| parent | 99a8295b9686e4addbc1469f8eea0014238e9e02 (diff) | |
| download | xen-a3d17a18e59a22c7be99d6e82910af29568d0057.tar.gz xen-a3d17a18e59a22c7be99d6e82910af29568d0057.tar.bz2 xen-a3d17a18e59a22c7be99d6e82910af29568d0057.zip | |
[TAPDISK] honor read-only attributes when creating tap-based VBDs
Signed-off-by: Jake Wires <jwires@xensource.com>
Diffstat (limited to 'tools/blktap/lib')
| -rw-r--r-- | tools/blktap/lib/blktaplib.h | 1 | ||||
| -rw-r--r-- | tools/blktap/lib/xenbus.c | 7 |
2 files changed, 6 insertions, 2 deletions
diff --git a/tools/blktap/lib/blktaplib.h b/tools/blktap/lib/blktaplib.h index 0ba3c04ec8..078a293185 100644 --- a/tools/blktap/lib/blktaplib.h +++ b/tools/blktap/lib/blktaplib.h @@ -173,6 +173,7 @@ typedef struct msg_hdr { uint16_t len; uint16_t drivertype; uint16_t cookie; + uint8_t readonly; } msg_hdr_t; typedef struct msg_newdev { diff --git a/tools/blktap/lib/xenbus.c b/tools/blktap/lib/xenbus.c index d50e492784..fb36e748fe 100644 --- a/tools/blktap/lib/xenbus.c +++ b/tools/blktap/lib/xenbus.c @@ -177,8 +177,11 @@ static void ueblktap_setup(struct xs_handle *h, char *bepath) } /* Check to see if device is to be opened read-only. */ - asprintf(&path, "%s/%s", bepath, "read-only"); - if (xs_exists(h, path)) + deverr = xs_gather(h, bepath, "mode", NULL, &path, NULL); + if (deverr) { + DPRINTF("ERROR: could not find read/write mode\n"); + goto fail; + } else if (path[0] == 'r') be->readonly = 1; if (be->blkif == NULL) { |