$ ktrace fsirand -p /altroot
Abort trap (core dumped)
$ kdump | tail
802 fsirand CALL pledge(0x16b2d3119a5e,0)
802 fsirand STRU pledge promise="stdio rpath wpath disklabel"
802 fsirand RET pledge 0
802 fsirand CALL open(0x16b2d341f060,0<O_RDONLY>)
802 fsirand NAMI "/altroot"
802 fsirand RET open 3
802 fsirand CALL ioctl(3,DIOCGDINFO,0x7f7ffffe6b10)
802 fsirand PLDG ioctl, "ioctl", errno 1 Operation not permitted
802 fsirand PSIG SIGABRT SIG_DFL code <537541152>
802 fsirand NAMI "fsirand.core"
Hence let's remove the pledge before opendev opendev and the DIOCGDINFO
ioctl. Note that fsirand pledges "stdio" right after the ioctl.
Index: fsirand.c
===================================================================
RCS file: /var/cvs/src/sbin/fsirand/fsirand.c,v
retrieving revision 1.37
diff -u -p -r1.37 fsirand.c
--- fsirand.c 23 Nov 2015 19:19:30 -0000 1.37
+++ fsirand.c 28 May 2016 16:58:03 -0000
@@ -106,9 +106,6 @@ fsirand(char *device)
u_int32_t bsize = DEV_BSIZE;
struct disklabel label;
- if (pledge("stdio rpath wpath disklabel", NULL) == -1)
- err(1, "pledge");
-
if ((devfd = opendev(device, printonly ? O_RDONLY : O_RDWR,
0, &devpath)) < 0) {
warn("Can't open %s", devpath);
