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authorchristos <christos@NetBSD.org>2016-01-04 03:00:24 +0000
committerchristos <christos@NetBSD.org>2016-01-04 03:00:24 +0000
commit4db07438285aac6fc5ea244646eaf1ac889ee665 (patch)
treea6ae88fc711463e1b25422e677e937098c777d98 /sys/dev/raidframe
parent8d83cc48d4f352b5ed783bc4fe6e6ef466601dfa (diff)
Don't leak redirected rescriptors to exec'ed processes. This is what ksh
does, but bash does not. For example: $ cat test1 #!/bin/sh exec 6> out echo "test" >&6 sh ./test2 exec 6>&- $ cat test2 echo "test2" >&6 $ ./test1 ./test2: 6: Bad file descriptor This fixes by side effect the problem of the rc system leaking file descriptors 7 and 8 to all starting daemons: $ fstat -p 1359 USER CMD PID FD MOUNT INUM MODE SZ|DV R/W root powerd 1359 wd / 2 drwxr-xr-x 512 r root powerd 1359 0 / 63029 crw-rw-rw- null rw root powerd 1359 1 / 63029 crw-rw-rw- null rw root powerd 1359 2 / 63029 crw-rw-rw- null rw root powerd 1359 3* kqueue pending 0 root powerd 1359 4 / 64463 crw-r----- power r root powerd 1359 7 flags 0x80034<ISTTY,MPSAFE,LOCKSWORK,CLEAN> root powerd 1359 8 flags 0x80034<ISTTY,MPSAFE,LOCKSWORK,CLEAN> root powerd 1359 9* pipe 0xfffffe815d7bfdc0 -> 0x0 w Note fd=7,8 pointing to the revoked pty from the parent rc process.
Diffstat (limited to 'sys/dev/raidframe')
0 files changed, 0 insertions, 0 deletions