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pathchk_LDADD, rm_LDADD, test_LDADD): New vars, for eaccess.
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unistd.h, as autoconf does this for us. Check for libgen.h.
Also look for eaccess within -lgen, which is where it is in
Solaris. Set LIB_EACCESS accordingly.
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eaccess on Solaris and SVR4-like systems.
(euidaccess): Use HAVE_EACCESS, not HAVE_DECL_EACCESS.
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you need to include first. You don't need to include any files
other than the usual config.h.
Include <inttypes.h> and <stdint.h> if available, for uintmax_t.
Remove 'struct stat;' not needed since we know sys/stat.h has
been included by dev-ino.h.
(struct cycle_check_state): Change chdir_counter to uintmax_t,
not size_t, since it isn't limited by object sizes.
Change magic from long unsigned int to int; that's good enough
for our use.
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is_power_of_two, to reflect better what it really does.
All uses changed. Arg is now uintmax_t, not unsigned int
(it should have been unsigned long int -- that was a bug).
(cycle_check): Check for integer overflow in cycle count,
and report a cycle if that happens, as it must be a cycle
by this point.
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bother to check for this.
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bother to check for this.
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returns NULL, so don't bother to check for this.
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gl_CHECK_TYPE_STRUCT_DIRENT_D_INO instead of invoking it directly.
Do not require AC_FUNC_CLOSEDIR_VOID.
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numeric backup extensions.
Include "backupfile.h" first.
Include errno.h, stdbool.h, limits.h, unistd.h, xalloc.h.
(CLOSEDIR, INT_STRLEN_BOUND): Remove.
(pathconf) [! (HAVE_PATHCONF && defined _PC_NAME_MAX)]: New macro.
(_POSIX_NAME_MAX) [!defined _POSIX_NAME_MAX]: New macro.
(NAME_MAX_MAXIMUM): New macro. Unlike the old addext.c, we
also look at _XOPEN_NAME_MAX, for better performance on modern
hosts that support only file names of length 255 or more.
(ISDIGIT): unsigned -> unsigned int
(max_backup_version, version_number): Remove.
(check_extension): New function. Similar to the old addext, but
static, assumes that the extension has already been added,
and a bit more careful on DOS hosts.
(numbered_backup): New function. It does what max_backup_version
and version_number used to do, but it doesn't use integer arithmetic
to calculate extensions so it doesn't overflow.
(find_backup_file_name): Rewrite to use these new functions.
This has a new optimization: we needn't call pathconf if the
new numbered backup name has the same length as the old.
Also, use xmalloc rather than malloc, so that the caller
needn't worry about memory exhaustion.
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All uses changed.
(NZERO): New macro, if system doesn't define it already.
(usage): Distinguish priorities from nice values.
Don't assume NZERO is 20.
(main): Use bool instead of int where appropriate.
If user specifies an adjustment out of range, always truncate it
to an inrange value instead of sometimes giving an error message
and sometimes not.
Do not assume that -1 is an error return from "nice" or
"getpriority", as it might be the current nice value minus NZERO.
If nice/setpriority fails with errno == EPERM, go ahead and run
the command anyway; POSIX requires this.
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how it affects the scheduling priority. (The old documentation
implied that the nice value equaled the scheduling priority, which
isn't accurate.) Document that the range of nice values might
exceed -20..19. Specify what happens when you give a nice value
that is out of range, or when you don't have permissions to lower
the nice value. Bash doesn't have a builtin 'nice', so don't say
"most shells" have one.
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as test.c no longer uses them directly.
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(eaccess): Remove. All users changed to use euidaccess instead.
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(dir_ok): Use euidaccess, not access.
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not gl_FUNC_EUIDACCESS.
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(gl_FUNC_EUIDACCESS): Use AC_CHECK_DECLS_ONCE, not AC_CHECK_DECLS.
(gl_PREREQ_EUIDACCESS): Check for eaccess and setregid decls.
Require AC_HEADER_STAT.
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(S_IXUSR, S_IXGRP, S_IXOTH, S_IROTH, S_IWOTH, S_IXOTH):
Remove; now done by stat-macros.h.
(NGROUPS_MAX, group_member): Remove; now down by group-member.h.
No need to include <limits.h>.
(errno): Remove decl; we now assume C89 or better.
(access, getuid, getgid, geteuid, getegid, stat) [defined _LIBC]:
New macros.
(uid, gid, have_ids): Remove these static variables.
They weren't accurate for programs that also invoked setreuid etc.
(euidaccess) [defined EFF_ONLY_OK || defined ACC_SELF ||
HAVE_DECL_EACCSS]: Use builtin substitutes.
[defined _LIBC]: Ignore __libc_enable_secure; it's not a
correct optimization for programs run as root that later
invoke setreuid.
[no builtin substitutes && HAVE_DECL_SETREGID &&
PREFER_NONREENTRANT_EUIDACCESS]:
Use setreuid+setregid to get the correct answer.
[no builtin substitutes && ! (HAVE_DECL_SETREGID &&
PREFER_NONREENTRANT_EUIDACCESS)]:
Don't assume that the stat macros have their historical values,
as POSIX doesn't require this.
[defined TEST]: Include <stdlib.h>; don't include errno.h
twice; include <error.h> rather than "error.h".
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Don't assume ut_line is null-terminated.
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might not be null terminated. All callers changed.
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(COPY_TO_EOF): Set to UINTMAX_MAX, not OFF_T_MAX (which was wrong).
(COPY_A_BUFFER): New macro.
(struct File_spec): New members mtime, mode, blocking.
Remove member n_consecutive_size_changes.
(DEFAULT_MAX_N_CONSECUTIVE_SIZE_CHANGES,
max_n_consecutive_size_changes_between_opens,
MAX_CONSECUTIVE_SIZE_CHANGES_OPTION): Remove.
(long_options, tail_forever, parse_options):
Remove (non-)support for --max-consecutive-size-changes.
(record_open_fd): New function.
(recheck, tail_file): Use it. Don't assume that stdin is open.
(dump_remainder): Add support for new COPY_A_BUFFER special value.
Treat errno==EAGAIN like EOF, since it might be a nonblocking read.
(recheck): New arg BLOCKING, specifying whether to use blocking reads.
All uses changed.
(n_live_files): Remove, replacing with...
(any_live_files): New function. All uses changed.
(tail_forever): Use nonblocking I/O unless we know that blocking I/O
is safe; this avoids some hangs when reading from a fifo.
Avoid invoking fstat or sleep when using blocking I/O.
Do not check for changes to size if the file is not a regular file,
as the size is undefined in that case.
Check for changes to mtime or mode, too; this works for non-regular
files.
(tail_forever, main): Redo fflush strategy to work even when input
is nonblocking. Don't use unbuffered output; just flush when needed.
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-> "file has not changed", which is more accurate for fifos.
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