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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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for libc, so we have to implement it here.
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_route_ and _tunnel_ options.
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mount, 2) Don't stop checking filesystem types due to EBUSY, it may mean already mounted by another filesystem type you haven't tried yet.
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add better error reporting.
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(line separator), and "/" (filename separator).
Restricting usernames to the legacy posix character allowed set (for filenames,
so the $HOME directory is creatable on VFAT and similar) means you can't have
UTF-8 usernames. Linux allows any character but / and NUL in filenames.
Since root is creating these entries, we assume root knows what it's doing.
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into GLOBALS.
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search.
(Fixes messages about not being able to delete directories when running make test).
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Other versions are adding Cached from /proc/meminfo to free buffers/cache
(and subtracting it from used), but sysinfo() doesn't provide it. (But it
provide "high memory", which hasn't been relevant for almost a decade...)
But that's a design change, not a cleanup issue.
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(grandfathered) awaiting cleanup.
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Cut predates the "pending" directory, so was checked in as-is. Ashwini
Sharma's recent static analysis fixes touched this file, but there's a lot
more to do than the static analyzer found.
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we want to redirect both, one, or neither of stdin/stdout.
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"does it exist" test (to avoid errors on rm -f of nonexistent files) said it didn't.
The fix: replace the access() with unlink(), which produces the same "does not
exist" errno and has the added bonus of acting as a fastpath for rm -f on
non-directories. (And since it produces a different error on directories,
falls through to the old behavior there.)
Most of this commit is comment updates explaining being subtle. :)
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Ashwini Sharma.
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command use that.
-F is equivalent to the gnu/dammit flag --we-think-long-options-without-short-options-are-a-good-idea
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Testing level: It compiled. If any portion of this works, I'll be amazed.
Still a bunch of todo items (see giant TODO block after globals)
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crond : CRON scheduler
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