Package: dpkg
Version: 1.10.28
architecture : i386
I have notice a case where start-stop daemon is blocking what should work.
I have to start a service called for example : dangerous
So i build a chroot in something like /var/chroot/dangerous
Then I build the tree :
dangerous
|-- bin
| |-- false
| `-- dangerous
|-- etc
| |-- resolv.conf
| `-- dangerous
| |-- dbconfig
| |-- logs
| | `-- net_out.log
| |-- plugins
| | `-- libluaplugin.so
| |-- scripts
| | |-- start.lua
| | |-- sometext.txt
| `-- triggers
| |-- happy
| |-- linux
| |-- lol
| |-- moon
| |-- house
| |-- mouse
| `-- wazzup
|-- lib
| |-- ld-linux.so.2
| |-- libGeoIP.so.1
| |-- libc.so.6
| |-- libcrypt.so.1
| |-- libcrypto.so.0.9.7
| |-- libdl.so.2
| |-- libgcc_s.so.1
| |-- liblua50.so.5.0
| |-- liblualib50.so.5.0
| |-- libluasocket.so.2.0
| |-- libm.so.6
| |-- libmysqlclient.so.12
| |-- libnsl.so.1
| |-- libnss_dns.so.2
| |-- libpcre.so.3
| |-- libpthread.so.0
| |-- libresolv.so.2
| |-- libssl.so.0.9.7
| |-- libstdc++.so.5
| |-- libverlihub.so.0
| |-- libvhapi.so.0
| `-- libz.so.1
`-- usr
`-- share
|-- GeoIP
| `-- GeoIP.dat
`-- lua50
`-- luasocket.lua
Then I try to start my program with a :
start-stop-daemon --start --chroot /var/chroot/dangerous -c
verlihub:nogroup --exec /bin/dangerous
And I get a start-stop-daemon: stat /bin/dangerous: No such file or
directory
It'a a few stupid no ?
I strace it ans see that the check if binary exist is done before the
chroot and it will never works if the binary is not present at same
place in the system...
I made a small change, if it could be included in next release of dpkg
it would be great
--- utils/start-stop-daemon.c.bak 2004-11-11 04:16:35.000000000 +0100
+++ utils/start-stop-daemon.c 2005-07-17 17:27:43.633164200 +0200
@@ -1156,8 +1156,10 @@ main(int argc, char **argv)
argc -= optind;
argv += optind;
- if (execname && stat(execname, &exec_stat))
- fatal("stat %s: %s", execname, strerror(errno));
+ if (changeroot == NULL) {
+ if (execname && stat(execname, &exec_stat))
+ fatal("stat %s: %s", execname, strerror(errno));
+ }
if (userspec && sscanf(userspec, "%d", &user_id) != 1) {
struct passwd *pw;
@@ -1259,6 +1261,8 @@ main(int argc, char **argv)
fatal("Unable to chdir() to %s", changeroot);
if (chroot(changeroot) < 0)
fatal("Unable to chroot() to %s", changeroot);
+ if (execname && stat(execname, &exec_stat))
+ fatal("stat %s: %s", execname, strerror(errno));
}
if (chdir(changedir) < 0)
fatal("Unable to chdir() to %s", changedir);
ps : I don't wan't to try braking my sarge by upgrading my version of
dpkg to a personal one, so if an updated package with could be avaible
on (even if) an unofficial mirror I would be happy...
ps2 : maybe a nocheck option that avoid check of process and so on could
avoid such trouble in future...
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