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to fail on non-toybox implementations.
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implement them yet.
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*tr.c*: It translate, squezze and delete characters.
Supported classes are alpha, alnum, digit, lower, upper
space, blank, puct, cntrl and xdigit.
*crontab.c*: Companion of crond. It maintains crontab files.
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symlink following.
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without -H or -L (just like ls -l).
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Only good for TEST_HOST=1 at the moment because the test infrastructure itself
depends on sed, so if an unfinished sed is in the $PATH it goes boing. But
hey, corner cases!
I have... more.
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anything interesting yet.
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attempts to read from stdout instead of stdin for "-" or no arguments.
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Suggested by Ashwini Sharma, I wound up implementing it by creating the new
link at a temporary name and renaming it over the old one instead of renaming
the old file out of the way and putting it back if it failed.
(Because "mkdir -p one/one/blah && ln -sf /bin/one one" would otherwise
rename one/one out of the way and only notice it can't delete it way at the
end when recovery's darn awkward, vs create new thing and if rename fails
(including EISDIR) that's the main error path. And yes the temporary name
is in the same directory as the destination so we never rename between mounts.)
link over the old one instead of renaming the old file and renaming it back.
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This implements all of the namespace parts of nsenter, but UID and GID
switching are missing, as are -r and -w (both because they're not strictly
necessary and because the nsenter manpage has an insufficient
description of how they work).
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The help text was inconsistent, and option parsing was completely broken
(the options mostly did the wrong thing).
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* acpi_callback had blindly assumed that a path of 26 chars or more was
the right depth; rely on depth from dirtree root
* acpi -c shows cooling device state
some backlights are set up so that they will report dimmer as higher,
but that's a hardware issue that can't be sanely worked around.
* acpi -t shows temperatures
this implementation will pick up fan, battery temperatures, etc.
(but currently not hwmon-type temperatures, or hdd temps;
acpi 1.7 does not measure these either)
we handle milli-C (typical) and deci-C (I've seen this on Qualcomm
batteries, and not yet anywhere else)
we do *not* handle deci-K yet
* acpi -V shows all sensors
* without saving the result of dirtree_path() to free later, we had
a slow leak.
all callbacks call this once, so save it in GLOBALS()
acpi -t happens to need this anyhow, though using openat()/readall()
instead of readfile() would work.
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analysis, plus occasional tweak by me while reviewing them.
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We xstrdup() an optargs string to avoid modifying our environment space
(because it can change what "ps" shows to other processes), and then parse
out colon delimited strings and save them in globals that can later be used
in the -v codepath and so on. But those globals _aren't_ strdup (no point)
which means we can't free the string while we're still using pointers into
the middle of it. So move the free to the end.
(I hardly ever test with CFG_TOYBOX_FREE switched on because even nommu
doesn't need it.)
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toys/pending/README), this can be probed from the source.)
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polish beyond this.)
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The Linux man page says I can use AT_SYMLINK_NOFOLLOW. It works in glibc,
uclibc, and klibc, but musl returns -EINVAL any time you pass in that flag
and the maintainer says that's not a bug and insists the man page and those
other libraries all change to match musl's behavior.
Toybox uses it to avoid scheduling unnecessary metadata writes for things we're
about to delete (have to chmod unreadable directories so we can descend into
them to delete their contents, the chmod happens before we descend so the
disk I/O has plenty of time to be scheduled) because the extra writes wear out
SSD faster. It's just an optimization and I don't really care if it works
_well_ (the fchmodat call _also_ takes AT_SYMLINK_NOFOLLOW so that's covered),
but musl's behavior uniquely makes the check always error and thus breaks normal
"rm -r".
Yes this workaround is checking #ifdef __MUSL__ which the library does not
supply (because its code is perfect and will thus never need to be worked
around). You can CFLAGS=-D__MUSL__ if you don't echo "#define __MUSL__" >>
include/features.h when installing the library.
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for libc, so we have to implement it here.
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