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* [PATCH] sandbox: add_image: mmap block devices
@ 2019-10-24 16:02 Robert Karszniewicz
  2019-10-24 16:07 ` Ahmad Fatoum
  0 siblings, 1 reply; 5+ messages in thread
From: Robert Karszniewicz @ 2019-10-24 16:02 UTC (permalink / raw)
  To: barebox

This makes it possible to mount block devices from the host machine,
which have been passed as arguments to --image

Signed-off-by: Robert Karszniewicz <r.karszniewicz@phytec.de>
---
 arch/sandbox/os/common.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/arch/sandbox/os/common.c b/arch/sandbox/os/common.c
index 86118822a..805ac8eef 100644
--- a/arch/sandbox/os/common.c
+++ b/arch/sandbox/os/common.c
@@ -39,6 +39,8 @@
 #include <signal.h>
 #include <sys/select.h>
 #include <sys/wait.h>
+#include <sys/ioctl.h>
+#include <linux/fs.h>
 /*
  * ...except the ones needed to connect with barebox
  */
@@ -260,6 +262,12 @@ static int add_image(char *str, char *devname_template, int *devname_number)
 	hf->size = s.st_size;
 	hf->devname = strdup(devname);
 
+	if (S_ISBLK(s.st_mode)) {
+		if (-1 == ioctl(fd, BLKGETSIZE64, &hf->size)) {
+			perror("ioctl");
+			goto err_out;
+		}
+	}
 	hf->base = (unsigned long)mmap(NULL, hf->size,
 			PROT_READ | (readonly ? 0 : PROT_WRITE),
 			MAP_SHARED, fd, 0);
-- 
2.11.0


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^ permalink raw reply	[flat|nested] 5+ messages in thread

end of thread, other threads:[~2019-10-28 11:45 UTC | newest]

Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2019-10-24 16:02 [PATCH] sandbox: add_image: mmap block devices Robert Karszniewicz
2019-10-24 16:07 ` Ahmad Fatoum
2019-10-25 11:08   ` Robert Karszniewicz
2019-10-25 11:19   ` [PATCH v2] " Robert Karszniewicz
2019-10-28 11:44     ` Sascha Hauer

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