Llewellyn/Tomb
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exit code check on close

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also removed pre-open and post-close as they don't really make sense
since all hooks are contained inside the Tomb. The post-close may be
implemented using a temp file, if a use case turns up for it.
This commit is contained in:
Jaromil 2017-06-06 16:30:48 +02:00
parent 056d0174f4
commit 127a8ed7ee
2 changed files with 18 additions and 19 deletions
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12
doc/tomb.1
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@ -300,12 +300,12 @@ example:
.B .B
.IP "exec-hooks" .IP "exec-hooks"
This hook file gets executed as user by tomb with the first argument This hook file gets executed as user by tomb with the first argument
determining the step of execution: "pre-open", "post-open", determining the step of execution: "open" or "close". The exec-hooks
"pre-close" or "post-close". The exec-hooks file should be an file should be an executable (ELF or shell script) present inside the
executable (ELF or shell script). Tomb executes this hook as user Tomb. Tomb executes this hook as user supplying two or more arguments,
supplying two or more arguments, the first being the step, followed by the first being the step, followed by the mountpoint of the tomb and,
the mountpoint of the tomb and, on close events, its name, loopback on close events, its name, loopback device and dev-mapper device
device and dev-mapper device paths. paths.
.SH PRIVILEGE ESCALATION .SH PRIVILEGE ESCALATION

25
tomb
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@ -1940,10 +1940,6 @@ mount_tomb() {
_success "Opening ::1 tomb file:: on ::2 mount point::" $TOMBNAME $tombmount _success "Opening ::1 tomb file:: on ::2 mount point::" $TOMBNAME $tombmount
# execute pre-open hooks if present
option_is_set -n ||
exec_safe_func_hooks pre-open ${tombmount}
lo_mount $TOMBPATH lo_mount $TOMBPATH
nstloop=`lo_new` nstloop=`lo_new`
@ -2072,7 +2068,7 @@ mount_tomb() {
# and exec-hooks (execute on open) # and exec-hooks (execute on open)
option_is_set -n || { option_is_set -n || {
exec_safe_bind_hooks ${tombmount} exec_safe_bind_hooks ${tombmount}
exec_safe_func_hooks post-open ${tombmount} exec_safe_func_hooks open ${tombmount}
} }
return 0 return 0
@ -2152,7 +2148,7 @@ exec_safe_bind_hooks() {
# #
# Synopsis: exec_safe_func_hooks /path/to/mounted/tomb # Synopsis: exec_safe_func_hooks /path/to/mounted/tomb
# #
# If an executable file named 'post-hooks' is found inside the tomb, # If an executable file named 'exec-hooks' is found inside the tomb,
# run it as a user. This might need a dialog for security on what is # run it as a user. This might need a dialog for security on what is
# being run, however we expect you know well what is inside your tomb. # being run, however we expect you know well what is inside your tomb.
# If you're mounting an untrusted tomb, be safe and use the -n switch # If you're mounting an untrusted tomb, be safe and use the -n switch
@ -2164,7 +2160,9 @@ exec_safe_func_hooks() {
_success "Exec hook: ::1 exec hook:: ::2 action:: ::3 argument::" \ _success "Exec hook: ::1 exec hook:: ::2 action:: ::3 argument::" \
"${mnt}/exec-hooks" "$1" "$2" "${mnt}/exec-hooks" "$1" "$2"
$mnt/exec-hooks "$1" "$2" $mnt/exec-hooks "$1" "$2"
return $?
} }
return 0
} }
# }}} - Tomb open # }}} - Tomb open
@ -2628,9 +2626,15 @@ umount_tomb() {
_warning "Please specify an existing tomb." _warning "Please specify an existing tomb."
return 0 } return 0 }
option_is_set -n || option_is_set -n || {
exec_safe_func_hooks \ exec_safe_func_hooks \
pre-close "$tombmount" "$tombname" "$tombloop" "$mapper" close "$tombmount" "$tombname" "$tombloop" "$mapper"
exec_hook_res=$?
[[ $exec_hook_res = 0 ]] || {
_warning "close exec-hook returns a non-zero error code: ::1 error::" $exec_hook_res
_failure "Operation aborted"
}
}
[[ -n $SLAM ]] && { [[ -n $SLAM ]] && {
_success "Slamming tomb ::1 tomb name:: mounted on ::2 mount point::" \ _success "Slamming tomb ::1 tomb name:: mounted on ::2 mount point::" \
@ -2680,11 +2684,6 @@ umount_tomb() {
[[ $? = 0 ]] || _verbose "/dev/$tombloop was already closed." [[ $? = 0 ]] || _verbose "/dev/$tombloop was already closed."
} }
# Execute post-hooks for eventual cleanup
option_is_set -n ||
exec_safe_func_hooks \
post-close "$tombmount" "$tombname" "$tombloop" "$mapper"
_success "Tomb ::1 tomb name:: closed: your bones will rest in peace." $tombname _success "Tomb ::1 tomb name:: closed: your bones will rest in peace." $tombname
done # loop across mounted tombs done # loop across mounted tombs