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Joachim Wiberg 3d2a975f11 Fix issue with tempfile() returning EOPNOTSUPP on Azure 
Turns out O_TMPFILE can fail in interesting ways when the underlying
filesystem doesn't support unnamed inodes, e.g. Azure used by GitHub
Actions.  Here's the exact qoute from open(2):

  "O_TMPFILE requires support by the underlying filesystem; only a
  subset of Linux filesystems provide that support.  In the initial
  implementation, support was provided in the ext2, ext3, ext4, UDF,
  Minix, and shmem filesystems.  Support for other filesystems has
  subsequently been added as follows: XFS (Linux 3.15); Btrfs (Linux
  3.16); F2FS (Linux 3.16); and ubifs (Linux 4.9)"

This patch adds a silent fallback to tmpfile() in these cases.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-10-03 12:55:01 +02:00

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Change Log
==========
All notable changes to the project are documented in this file.
[v2.4.1][UNRELEASED]
-----------------------
### Changes
### Fixes
- Fix issue with `tempfile()` returning EOPNOTSUPP on Azure
[v2.4.0][] - 2021-03-27
-----------------------
### Changes
- Add support for `touchf()`, formatted string support for `touch()`
- Add support for `erasef()`, formatted string support for `erase()`
- Add support for `strtrim()`, trims leading and trailing white-space
from a string
### Fixes
- Fix `systemf()` improper handling of `system()` return value. Now
checks if exited OK, then returning the exit status of the command, or
if not exited OK, then checks if the command was signaled, and returns
-1 with `errno` set. This also allows for returning 127, like
`system()`, if the shell, or the program itself, did not exist
[v2.3.1][] - 2021-02-12
-----------------------
### Changes
- Copyright updates, including LICENSE file, year + author last name
### Fixes
- Debian packaging fixes only
[v2.3.0][] - 2021-02-12
-----------------------
### Changes
- Add support for `fremove()`, formatted `remove()` replacement
- Add support for `truncatef()`, formatted `truncate()` replacement
- Add tar.gz archives to distribution
### Fixes
- Handle `ETIMEDOUT` error for `connect()` call in `telnet_open()`
[v2.2.0][] - 2020-03-16
-----------------------
### Changes
- Add support for `systemf()`, formatted string `system()` replacement
- Add support for `fmkpath()`, formatted string `mkpath()`
- Add support for `fopenf()`, formatted string `fopen()` replacement
### Fixes
- Fix possible memory leak in `rsync()`, found by Coverity Scan
- Check return value of `fstat()` to prevent bogus destination file
times when using `copyfile()`, found by Coverity Scan
[v2.1.2][] - 2020-02-22
-----------------------
### Fixes
- Fix Debian package upgrade from libite -> libite5
[v2.1.1][] - 2020-02-22
-----------------------
### Changes
- Add test/example for `printhdr()`
- Update copyright years
### Fixes
- chomp: Check for beginning of string while removing \n's
[v2.1.0][] - 2019-08-26
-----------------------
### Changes
- Add support for `strmatch()` and `strnmatch()`
- Add support for `yorn()`, safe yes-or-no prompt
- Add support for telnet expect/session APIs
- Add modified `printhdr()` which takes ANSI attribute
### Fixes
- Fix `pidfile_signal()`: always return result of `kill()`, or the
result of `remove()` if we successfully sent `SIGKILL`
- Fix `strtonum()`: POSIX `strtoll()` returns `EINVAL`, check that
- Fix #13, support C++ `extern "C" {}` for header files
[v2.0.2][] - 2018-05-10
-----------------------
### Fixes
- Fix issue #12, missing includes in `strlite.h` for standalone use
- FTBFS `strtonum.c` on older systems w/o `LLONG_MAX` and `LLONG_MIN`
[v2.0.1][] - 2017-12-22
-----------------------
### Changes
- Add missing `initscr()` declaration, regression in [v2.0.0][]
- Add `#ifdef` guards around `min()` and `max()` macros
- Add `const` to `char *` args in multiple API:s:
- `fexist()`
- `fgetint()`
- `fisslashdir()`
- `copyfile()`
- `movefile()`
- `ifconfig()`
- `lfopen()`
- `lfgetkey()`
- `lfgetint()`
### Fixes
- Fix #9, uncommon location of `which` command in unit test
- Fix #10, supply unit test with a default `$PATH`
- Fix #11, `touch()` command cannot handle relative paths when updating
the mtime of an existing file
[v2.0.0][] - 2017-11-22
-----------------------
### Changes
- Remove `tree()`, moved to toolbox.git instead
- Remove `fmode()`, please use `stat()` instead, it's safer
- Add support for keeping mtime in `copy()` and `rsync()`
- Move source files to an `src/` sub-directory
- Move `initscr()` from `conio.h` to `conio.c`
- Update docs, recommend `mkpath()` over `makepath()`
- Bump ABI version, major changes to library
### Fixes
- Fix #7, inconsistent return value in `mkpath()` and `makepath()`
- Fix #8, constify `mkpath()` and `makepath()`
[v1.9.3][] - 2017-10-24
-----------------------
### Changes
- `initscr()`, use stdout, not stderr, like the rest of the
`conio.h` macros. Also, stderr may be redirected by user
- `tree()`, update unit test, use standard directries
### Fixes
- `initscr()`, verify that both stdin and stdout are real TTYs
before messing up output or blocking on input for the user
- `tree()`, increase internal buffer slightly, output may be
truncated otherwise. Found by GCC 7.2
[v1.9.2][] - 2017-07-09
-----------------------
### Changes
- Add `initscr()` function to query screen size
- Convert `printheader()` to a static inline function
[v1.9.1][] - 2017-07-03
-----------------------
### Changes
- Add missing `whichp()` predicate function to accompany `which()`
- Allow `which("ps aux")`, which skips any arguments to command
[v1.9.0][] - 2017-07-02
-----------------------
### Changes
- Add `which()`, a C implementation of UNIX which(1)
- Add `printheader()`, prints a top-like table heading for client tools
- Remove `UNUSED()` macro, recommended to disable GCC warning instead
### Fixes
- Fix issue #6: `touch()` does not update mtime if file exists
- Fix non-writable `tempfile()`, now with proper unit test
[v1.8.3][] - 2017-01-08
-----------------------
### Changes
- Support absolute path in `pidfile()`. Needed by, e.g. Inadyn
- Add initial `debian/` packaging
- Update README with note on remembering to set `umask()`
### Fixes
- In use-cases when `pidfile()` is called consecutively, e.g. on
`SIGHUP`, recreate PID file if it no longer exists
[v1.8.2][] - 2016-09-05
-----------------------
### Changes
- Updated build instructions in README.
- Converted `touch()`, `makedir()`, `makefifo()`, and `erase()` from
macros to inline functions. Also removed implicit logging to stderr
on error.
### Fixes
- Fix small memory leak in `pidfile()` ... at exit.
- Fixes for building on musl libc
[v1.8.1][] - 2016-06-25
-----------------------
### Fixes
- `fparseln()`, portability fix for NetBSD
- `pidfile()`, portability fix for NetBSD and OpenBSD
[v1.8.0][] - 2016-06-06
-----------------------
### Changes
- Change return type of `fsendfile()` from `size_t` to `ssize_t`
- Change `dir()` semantics: do not assert and always return error
without calling `perror()` or similar.
- The OpenBSD `pidfile()` function's prefix path `_PATH_VARRUN`
can now be overridden by setting the hidden `__pidfile_path`
variable. E.g., to `_PATH_TMP`. Make sure read the docs!
- Add new unit test framework `make check`.
### Fixes
- Fix bad path in new `strndupa()` header file.
- Add missing progress bar API's to `lite.h`
[v1.7.0][] - 2016-06-05
-----------------------
### Changes
- Add support for GNU `strdupa()`, for [Inadyn][] on NetBSD.
- Add support for GNU `strndupa()` and `strnlen()`
### Fixes
- Fix `mkpath()` to handle creating relative directories.
[v1.6.0][] - 2016-05-13
-----------------------
### Changes
- Add support for NetBSD `fparaseln()` for the benefit of [Mg][]
- Add support for OpenBSD `reallocarray()` for the benefit of [Mg][]
- Constify `fisdir()` argument
[v1.5.1][] - 2016-04-17
-----------------------
Minor fix release.
### Changes
- Update README.md, add help when libite is used in autotools projects.
Spell checking and minor cleanup.
### Fixes
- Activate use of `utimensat()` when `pidfile()` is called multiple
times. This reduces the overhead of calling open+write+close to
simply updating the mtime of the PID file.
- Westermo fixes for `fcopyfile()`: nothing copied on embedded PPC
system when using `tmpfile()` as source.
[v1.5.0][] - 2016-03-20
-----------------------
This release changes the header file namespace. Apologies for any
problems this may cause!
### Changes
- Change namespace for header files: `libite/` to `lite/`, e.g. using
`pkg-config` your C program must now `#include <lite/lite.h>`
- Update `pidfile()` to use `utimensat()` to update atime+mtime instead
of opening and writing PID again. Less overhead and nanonsecond res.
[v1.4.4][] - 2016-02-23
-----------------------
### Changes
- Add `ibite.pc.in` for `pkg-config` support.
### Fixes
- Fix issue #3: `tempfile()` fails with bad `O_TMPFILE` on some embedded
targets, in particular PowerPC. On systems with older GLIBC but with
a sufficiently new kernel `O_TMPFILE` is missing and the local libite
definition was wrong, hard coded for x86. Fixed by Johan Askerin.
[v1.4.3][] - 2016-02-02
-----------------------
### Fixes
- Remove symlinks to Markdown files from GIT
- Distribute and install Markdown files: README.md, etc.
[v1.4.2][] - 2016-01-23
-----------------------
### Fixes
- Fix issue #2: GCC6 `-Wmisleading-indentation` causing FTBFS in pimd,
which enables `-Werror`
[v1.4.1][] - 2016-01-22
-----------------------
### Fixes
- Fix install path for include files, regression in v1.4.0 With the
introduction of GNU autotools include file namespace was unfortunately
lost. All include files were therefore installed in $(prefix)/include
instead of $(prefix)/include/libite.
[v1.4.0][] - 2016-01-22
-----------------------
### Changes
- Change to GNU configure and build system
- Add Niels Provos' splay and red-black tree implementation from OpenBSD
`sys/tree.h`, r1.14
- Make `pidfile()` file name accessible as `__pidfile_name`
- Step ABI revision to 2.1, with help from http://250bpm.com/blog:41
[v1.3.0][] - 2016-01-07
-----------------------
### Changes
- Add highly useful typeless `min()`/`max()` macros to `lite.h`,
courtesy of Tobias Waldekranz
- Add BSD `queue.h` and Borland inspired `conio.h` to `install-dev`
target. Needed by [Finit][].
- Note, this release update `queue.h` to OpenBSD v1.43, which removes
support for circular queues (CIRCLEQ).
- Update `strlcpy.c` to OpenBSD v1.12, readability fixes.
- Update `strlcat.c` to OpenBSD v1.14, readability fixes.
- Update `strtonum.c` to OpenBSD v1.7, tiniest of style tweaks.
### Fixes
- Only update mtime if `pidfile()` is called more than once, do not
install multiple `atexit()` handlers.
- Add `#ifndef pidfile`, as for other BSD functions, in case the user
already have a local copy, or a C library with one.
[v1.2.0][] - 2015-11-23
-----------------------
### Changes
- Add simple parser for UNIX configuration files, e.g. `/etc/group`,
`/etc/passwd`, and `/etc/protocols`:
- `lfopen()`
- `lfclose()`
- `lftok()`
- `lfgetkey()`
- `lfgetint()`
- `fgetint()`
### Fixes
- Do not allow `VERSION` to be overloaded by build system.
- Make sure we don't inherit `LDFLAGS` from environment.
[v1.1.1][] - 2015-09-27
-----------------------
### Fixes
* Silence annoying warnings from GNU ar
* Fix macro definitions for compat APIs
[v1.1.0][] - 2015-09-16
-----------------------
### Changes
- Support for `make distdir` used by automake based projects
- `lite.h` move from `error.h` to more BSD friendly `err.h`
- Add highly useful `NELEMS()` and bitmanip macros
- Lots of autotests added
- Add support for running autotests from Travis
- Add `progress()` simple progress bar
- Add `tree()` simple command line tree replacement
- Bump `SONAME` to `libite.so.2` on behalf of [Finit][]
### Fixes
- `pidfile()` upgrade to OpenBSD r1.11
- Lots of README updates, fixes and additions
[v1.0.0][] - 2015-07-12
-----------------------
Initial extraction of frog DNA from [Finit][]. See [README][] for API details.
[UNRELEASED]: https://github.com/troglobit/libite/compare/v2.4.0...HEAD
[v2.4.0]: https://github.com/troglobit/libite/compare/v2.3.1...v2.4.0
[v2.3.1]: https://github.com/troglobit/libite/compare/v2.3.0...v2.3.1
[v2.3.0]: https://github.com/troglobit/libite/compare/v2.2.1...v2.3.0
[v2.2.1]: https://github.com/troglobit/libite/compare/v2.2.0...v2.2.1
[v2.2.0]: https://github.com/troglobit/libite/compare/v2.1.2...v2.2.0
[v2.1.2]: https://github.com/troglobit/libite/compare/v2.1.1...v2.1.2
[v2.1.1]: https://github.com/troglobit/libite/compare/v2.1.0...v2.1.1
[v2.1.0]: https://github.com/troglobit/libite/compare/v2.0.2...v2.1.0
[v2.0.2]: https://github.com/troglobit/libite/compare/v2.0.1...v2.0.2
[v2.0.1]: https://github.com/troglobit/libite/compare/v2.0.0...v2.0.1
[v2.0.0]: https://github.com/troglobit/libite/compare/v1.9.3...v2.0.0
[v1.9.3]: https://github.com/troglobit/libite/compare/v1.9.2...v1.9.3
[v1.9.2]: https://github.com/troglobit/libite/compare/v1.9.1...v1.9.2
[v1.9.1]: https://github.com/troglobit/libite/compare/v1.9.0...v1.9.1
[v1.9.0]: https://github.com/troglobit/libite/compare/v1.8.3...v1.9.0
[v1.8.3]: https://github.com/troglobit/libite/compare/v1.8.2...v1.8.3
[v1.8.2]: https://github.com/troglobit/libite/compare/v1.8.1...v1.8.2
[v1.8.1]: https://github.com/troglobit/libite/compare/v1.8.0...v1.8.1
[v1.8.0]: https://github.com/troglobit/libite/compare/v1.7.0...v1.8.0
[v1.7.0]: https://github.com/troglobit/libite/compare/v1.6.0...v1.7.0
[v1.6.0]: https://github.com/troglobit/libite/compare/v1.5.1...v1.6.0
[v1.5.1]: https://github.com/troglobit/libite/compare/v1.5.0...v1.5.1
[v1.5.0]: https://github.com/troglobit/libite/compare/v1.4.4...v1.5.0
[v1.4.4]: https://github.com/troglobit/libite/compare/v1.4.3...v1.4.4
[v1.4.3]: https://github.com/troglobit/libite/compare/v1.4.2...v1.4.3
[v1.4.2]: https://github.com/troglobit/libite/compare/v1.4.1...v1.4.2
[v1.4.1]: https://github.com/troglobit/libite/compare/v1.4.0...v1.4.1
[v1.4.0]: https://github.com/troglobit/libite/compare/v1.3.0...v1.4.0
[v1.3.0]: https://github.com/troglobit/libite/compare/v1.2.0...v1.3.0
[v1.2.0]: https://github.com/troglobit/libite/compare/v1.1.1...v1.2.0
[v1.1.1]: https://github.com/troglobit/libite/compare/v1.1.0...v1.1.1
[v1.1.0]: https://github.com/troglobit/libite/compare/v1.0.0...v1.1.0
[v1.0.0]: https://github.com/troglobit/libite/compare/TAIL...v1.0.0
[Finit]: https://github.com/troglobit/finit/
[Inadyn]: https://github.com/troglobit/inadyn/
[Mg]: https://github.com/troglobit/mg
[README]: https://github.com/troglobit/libite/blob/v1.0.0/README.md
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