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and remove manual prototypes; fchmod, realpath
and so on rely on the _XOPEN_SOURCE macro.
the POSIX macro wasn't needed: _XOPEN_SOURCE
is sufficient.
Signed-off-by: Leah Rowe <leah@libreboot.org>
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use the POSIX one
declare prototypes where necessary.
Signed-off-by: Leah Rowe <leah@libreboot.org>
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where possible, try not to clobber sys errno. override
it only when relatively safe.
also: when a syscall succeeds, it may set errno. this
is rare, but permitted (nothing specified against it
in specs, and the specs say that errno is undefined
on success).
i'm not libc, but i'm wrapping around it, so i need
to be careful in how i handle the errno value.
also:
i removed the requirement for directories to be
executable, in mkhtemp.c, because this isn't required
and will only break certain setups.
in world_writeable and sticky, i made the checks stricter:
the faccessat check was being skipped on some paths, so
i've closed that loophole now.
i also generally cleaned up some code, as part of the errno
handling refactoring, where it made sense to do so, plus a
few other bits of code cleanup.
Signed-off-by: Leah Rowe <leah@libreboot.org>
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just use PATH_MAX like a normal person
with additional safety
Signed-off-by: Leah Rowe <leah@libreboot.org>
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Signed-off-by: Leah Rowe <leah@libreboot.org>
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8GB of entropy is a tad extreme
Signed-off-by: Leah Rowe <leah@libreboot.org>
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Signed-off-by: Leah Rowe <leah@libreboot.org>
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spoiler alert: it's slow as molasses
part 2 will be presented at a later date
(yes, please don't fill 8GB of memory with
random data and hexdump it)
Signed-off-by: Leah Rowe <leah@libreboot.org>
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the functions no longer return errors, so i don't
need to handle them.
furthermore, the handling in state.c is redundant,
so i've removed that too.
Signed-off-by: Leah Rowe <leah@libreboot.org>
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generalise it in rand.c because this logic will
be useful for other programs in the future.
Signed-off-by: Leah Rowe <leah@libreboot.org>
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Signed-off-by: Leah Rowe <leah@libreboot.org>
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this is a more generic one that i implemented
for "lottery.c" (which is really just a tester
of my rset function in lib/rand.c)
i could probably actually write a full hexdump
program in libreboot-utils to be honest.
Signed-off-by: Leah Rowe <leah@libreboot.org>
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Signed-off-by: Leah Rowe <leah@libreboot.org>
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i now use a singleton hook function per program:
nvmutil, mkhtemp and lottery
call this at the startup of your program:
(void) errhook(exit_cleanup);
then provide that function. make it static,
so that each program has its own version.
if you're writing a program that handles lots
of files for example, and you want to do certain
cleanup on exit (including error exit), this can
be quite useful.
Signed-off-by: Leah Rowe <leah@libreboot.org>
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should be null on bad return
Signed-off-by: Leah Rowe <leah@libreboot.org>
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Signed-off-by: Leah Rowe <leah@libreboot.org>
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Signed-off-by: Leah Rowe <leah@libreboot.org>
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Signed-off-by: Leah Rowe <leah@libreboot.org>
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Signed-off-by: Leah Rowe <leah@libreboot.org>
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Signed-off-by: Leah Rowe <leah@libreboot.org>
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Signed-off-by: Leah Rowe <leah@libreboot.org>
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Signed-off-by: Leah Rowe <leah@libreboot.org>
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and the module bias handling is fully correct
Signed-off-by: Leah Rowe <leah@libreboot.org>
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Signed-off-by: Leah Rowe <leah@libreboot.org>
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Signed-off-by: Leah Rowe <leah@libreboot.org>
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Signed-off-by: Leah Rowe <leah@libreboot.org>
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to test the effectiveness of the rand function
Signed-off-by: Leah Rowe <leah@libreboot.org>
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