| Commit message (Collapse) | Author | Age |
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Avoid a stat() call for each affected target and also potentially speed
up parallel builds.
From the GNU make manual[1]:
> Phony targets are also useful in conjunction with recursive
> invocations of make (see Recursive Use of make). In this situation
> the makefile will often contain a variable which lists a number of
> sub-directories to be built.
[...]
> The implicit rule search (see Implicit Rules) is skipped for .PHONY
> targets. This is why declaring a target as .PHONY is good for
> performance, even if you are not worried about the actual file
> existing.
Commands used to search, replace and cleanup:
$ find -type f -name '*Makefile.in' -exec sed -i.bak \
-e 's/^all:/.PHONY: all\nall:/' \
-e 's/^clean:/.PHONY: clean\nclean:/' \
-e 's/^distclean:/.PHONY: distclean\ndistclean:/' '{}' +
$ find -type f -name '*Makefile.in.bak' -exec rm '{}' +
[1]: https://www.gnu.org/software/make/manual/html_node/Phony-Targets.html
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With a fun little script:
$ git ls-files -z -- '*Makefile*' |
xargs -0 -I '{}' sh -c \
"test -s '{}' && printf '%s\n' \"\`git stripspace <'{}'\`\" >'{}'"
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according to GCC documentation (https://gcc.gnu.org/onlinedocs/gcc/Link-Options.html):
"For predictable results, you must also specify the same set of options
used for compilation (-fpie, -fPIE, or model suboptions) when you
specify this linker option."
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* move copyright statement to 2020
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obtained with: cppcheck --enable=warning --force --inconclusive --quiet ~/firejail/src
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https://bugs.debian.org/869707
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If a program would have called stat() and then stat64(),
the traced program probably would crash
with a NULL pointer access on orig_stat64.
I've checked for similiar glitches in the
other wrappers -> they looked ok.
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storage_find function fails on relative path, so nothing reported to log when blacklisted file accessed by relative path.
This is because CWD is NULL when realpath function called.
How to reproduce:
touch /home/user/somefile
firejail --blacklist=somefile --tracelog cat somefile
Solution: keep CWD value and set it before calling realpath. In order to do this:
* new wrapper for chdir call, and variable to keep CWD added.
* storage_find modified to chdir before calling realpath function.
* order of storage_find and orig_* calls in syscall wrappers changed,
to prevent error set by calls in storage_find leak outside.
* condition for calling realpath changed to include double-slash
and path without initial slash.
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