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Paul Eggert
bb4e436165
Merge into lib/canonicalize-lgpl.c the changes of glibc stdlib/canonicalize.c through glibc commit b589bd672c529cf264dc6dfdfa11f73c7e4e1666 dated today. The result should be copiable back to glibc byte-for-byte. The original motivation for this merge was to make eloop-threshold.h thread-safe on all platforms. It turned out that glibc has already done this, trivially, by having the include file define a constant 40 rather than a function. This conforms to POSIX on all glibc targets, and it should also work on all Gnulib targets that I know of, as sysconf (_SC_SYMLOOP_MAX) <= 40 on all known platforms. POSIX allows us to follow more symlink expansions than any nonnegative number returned by sysconf (_SC_SYMLOOP_MAX), and if that number is negative POSIX requires only to expand at least 8 symlinks so the glibc value of 40 is good then too. * NEWS: Mention the incompatible change. * config/srclist.txt: Add lib/min-eloop-threshold.h. * lib/canonicalize-lgpl.c [_LIBC]: Include <stdbool.h>. (__rawmemchr): Remove. Replace its use with strchr. * lib/min-eloop-threshold.h: Sync byte-for-byte from gnulibc, renaming the file from lib/eloop-threshold.h. All uses changed. This entails the following changes: (_MIN_ELOOP_THRESHOLD_H): Rename from _ELOOP_THRESHOLD_H. All uses changed. Don’t #error out if config.h is not already included. Don’t include <limits.h>. [_LIBC]: Don’t include <sys/param.h>. (_GL_ATTRIBUTE_CONST) [_LIBC]: Remove. [!_LIBC]: Don’t include <unistd.h>, "minmax.h". (__sysconf, SYMLOOP_MAX) [!_LIBC]: Remove. (MIN_ELOOP_THRESHOLD): Define unconditionally. (__eloop_threshold): Remove. All uses replaced by MIN_ELOOP_THRESHOLD. The new expression is of type int not unsigned, but that’s better for callers anyway. * lib/openat2.c (do_openat2): Symlink count is now int, not long int. * modules/eloop-threshold (Files, Include): Adjust to file name change. (Depends-on): Remove minmax, unistd-h.
21 lines
209 B
Plaintext
21 lines
209 B
Plaintext
Description:
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Threshold for symbolic link loops and ELOOP
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Files:
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lib/min-eloop-threshold.h
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Depends-on:
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configure.ac:
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Makefile.am:
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Include:
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<min-eloop-threshold.h>
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License:
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LGPLv2+
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Maintainer:
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all, glibc
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