How to reproduce 1-byte overflow:
```
$ FEATURES=-test CFLAGS="-fsanitize=address -O0 -ggdb3" emerge -1 openrc
=================================================================
==1==ERROR: AddressSanitizer: stack-buffer-overflow on address 0x7fff0efd8710
at pc 0x000000402076 bp 0x7fff0efd7d50 sp 0x7fff0efd7d40
WRITE of size 1 at 0x7fff0efd8710 thread T0
#0 0x402075 (/sbin/openrc-init+0x402075)
#1 0x3cf6e2070f in __libc_start_main (/lib64/libc.so.6+0x3cf6e2070f)
#2 0x4013b8 (/sbin/openrc-init+0x4013b8)
Address 0x7fff0efd8710 is located in stack of thread T0 at offset 2432 in frame
#0 0x401cfb (/sbin/openrc-init+0x401cfb)
This frame has 3 object(s):
[32, 160) 'signals'
[192, 344) 'sa'
[384, 2432) 'buf' <== Memory access at offset 2432 overflows this variable
HINT: this may be a false positive if your program uses some custom stack unwind mechanism or swapcontext
(longjmp and C++ exceptions *are* supported)
SUMMARY: AddressSanitizer: stack-buffer-overflow ??:0 ??
```
The problem here is in the code handling reads from 'init.ctl':
```
int main(int argc, char **argv) {
...
char buf[2048];
for (;;) {
/* This will block until a command is sent down the pipe... */
fifo = fopen(RC_INIT_FIFO, "r");
count = fread(buf, 1, 2048, fifo);
buf[count] = 0;
...
}
```
`buf[count] = 0;` writes outside the buffer when `fread()` returns non-truncated read.
This fixes#138.
Only close the log if we successfully opened it.
Reported-by: Brian Evans <grknight@gentoo.org>
Tested-by: Brian Evans <grknight@gentoo.org>
Signed-off-by: Sergei Trofimovich <slyfox@gentoo.org>
This creates --respawn-delay, --respawn-max and --respawn-period. It was
suggested that it would be easier to follow if the options were
separated.
This is for #126.
Allow limiting the number of times supervise-daemon will attempt to respawn a
daemon once it has died to prevent infinite respawning. Also, set a
reasonable default limit (10 times in a 5 second period).
This is for issue #126.
openrc-init.c and openrc-shutdown.c are based on code which was written by
James Hammons <jlhamm@acm.org>, so I would like to publically
thank him for his work.
Since deptree2dot and the perl requirement are completely optional, we
can move this tool to the support folder. This gives the user the option
of using it if they have perl installed, and means we do not have an
optional runtime dependency on perl.
Documentation for this tool has also been added to the support folder.
X-Gentoo-Bug: 600742
X-Gentoo-Bug-URL: https://bugs.gentoo.org/show_bug.cgi?id=600742
This path should not be hard coded in the open call.
Linux prior to 2.4.19 did not have /proc/self/mounts, so for now I'm
making this value /proc/mounts everywhere, but that may change to
/proc/self/mounts on linux; I'm not sure we should care about <2.4.19.
X-Gentoo-Bug: 604646
X-Gentoo-Bug-URL: https://bugs.gentoo.org/show_bug.cgi?id=604646
This reverts commit 8b4fc05ff2.
The original commit did not explain why this feature was disabled, and I
now have a request to enable it.
This fixes#24.
The original auto detection of Docker containers assumed the presence of
a container environment variable. However, Docker-1.12 does not
implement this, and I'm not sure which versions of docker implemented
it.
The new test is for the presence of a file named .dockerenv in the
root directory.
These warnings were inserted in verbose only mode in OpenRC-0.13.A
Now, we are making them more visible in preparation for removing these
compatibility binaries in the future.
The whitelist of environment variables we pass to service scripts
included several unnecessary variables.
The default whitelist now includes EERROR_QUIET, EINFO_QUIET,
IN_BACKGROUND and IN_HOTPLUG.
X-Gentoo-Bug: 569542
X-Gentoo-Bug-URL: https://bugs.gentoo.org/show_bug.cgi?id=569542
In the past, OpenRC was a hybrid of a centralized and file-scope
license/copyright structure.
I followed the instructions from the Software Freedom Law Center [1] to
convert to a Centralized structure where possible, for easier future
maintenance.
[1] https://softwarefreedom.org/resources/2012/ManagingCopyrightInformation.html
These functions replace rc_sys so that we can detect containers and vms
separately.
Also, we copy file_regex() to rc-misc.c and open it to all operating
systems.
In src/rc/_usage.c, we were using bootlevel as the variable to hold the
return value of rc_sys.
This changes the variable name to systype because this function returns
a system type, not a runlevel.
These functions were never meant to be used outside of OpenRC, and they
were added when we thought we were going to do away with the automatic
detection of subsystems. Since the autodetection is not going away, we
can combine these functions into rc_sys.
The want dependency is similar to the use dependency. If a service
script, for example called service1, adds "want service2" to its depend
function, OpenRC will attempt to start service2, if it exists on the
system, when service1 is started.
However, service1 will start regardless of the status of
service2.
X-Gentoo-Bug: 406021
X-Gentoo-Bug-URL: https://bugs.gentoo.org/show_bug.cgi?id=406021
Rename the rc_conf_override function to describe its purpose better,
drop one conditional compile by making it available everywhere, and move
the call to it after the optional rc.conf.d directory is processed.
This makes it possible to override settings in rc.conf by adding a
directory @SYSCONFDIR@/rc.conf.d and putting files in this directory.
The files will be processed in lexical order, and the last setting in
these files will be used.
