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raw-posix: improve detection of scsi-generic devices

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Allow symbolic links which point to /dev/sgX devices.

Signed-off-by: Bernhard Kohl <bernhard.kohl@nsn.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Bernhard Kohl 2010-09-06 17:06:02 +02:00 committed by Kevin Wolf
parent ebef0bbb1a
commit 05acda4d16
1 changed files with 8 additions and 2 deletions
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10
block/raw-posix.c
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@ -48,6 +48,7 @@
#endif #endif
#ifdef __linux__ #ifdef __linux__
#include <sys/ioctl.h> #include <sys/ioctl.h>
#include <sys/param.h>
#include <linux/cdrom.h> #include <linux/cdrom.h>
#include <linux/fd.h> #include <linux/fd.h>
#endif #endif
@ -868,8 +869,13 @@ static int hdev_open(BlockDriverState *bs, const char *filename, int flags)
s->type = FTYPE_FILE; s->type = FTYPE_FILE;
#if defined(__linux__) #if defined(__linux__)
if (strstart(filename, "/dev/sg", NULL)) { {
bs->sg = 1; char resolved_path[ MAXPATHLEN ], *temp;
temp = realpath(filename, resolved_path);
if (temp && strstart(temp, "/dev/sg", NULL)) {
bs->sg = 1;
}
} }
#endif #endif