bootloader: rebase onto upstream 1.0.0, sync firmware-loader version
Bootloader fork rebase:
- Base changed from 0.1.0 pre-patched archive to upstream 1.0.0 tag (c7eeb9f)
- Applied 0001-redbear-local-forks.patch (Cargo.toml crate path redirects)
- Applied fix-uefi-alloc-panic.patch equivalents (4 panic!() -> graceful
error handling in src/main.rs)
- Applied P5-live-preload-cap-1gib.patch (1 GiB cap on live image preload)
- Skipped: P0 GPT partition scan (requires new module + integration),
P1 timeout/default-resolution, P2 live preload guard (subsumed by
panic fixes + cap), P3 live image safe read, P4 large ISO boot,
redox.patch — to be applied in dedicated rebase session.
firmware-loader/Cargo.toml: version 0.1.0 -> 0.3.0 (sync with other
Red Bear custom crates which are at 0.3.0).
fork-upstream-map.toml: bootloader back from PENDING_REBASE to 1.0.0
since the partial rebase matches upstream 1.0.0 content.
fork-upstream-map.toml: base restored to 'main' tracked (was correctly
tracked by build-redbear.sh).
This commit is contained in:
@@ -0,0 +1,163 @@
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/* System dependent declarations.
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Copyright (C) 1988-1989, 1992-1995, 1998, 2001-2002, 2004, 2006, 2009-2013,
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2015-2025 Free Software Foundation, Inc.
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This file is part of GNU DIFF.
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#define SYSTEM_INLINE _GL_EXTERN_INLINE
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#include "system.h"
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/* Do struct stat *S, *T describe the same file? */
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bool
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same_file (struct stat const *s, struct stat const *t)
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{
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if (! SAME_INODE (*s, *t))
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{
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# if HAVE_STRUCT_STAT_ST_RDEV
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/* Two character special files describe the same device if st_rdev
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is the same, and likewise for block special devices.
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They have the same contents, so treat them as the same. */
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if (((S_ISCHR (s->st_mode) && S_ISCHR (t->st_mode))
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|| (S_ISBLK (s->st_mode) && S_ISBLK (t->st_mode)))
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&& s->st_rdev == t->st_rdev)
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return true;
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# endif
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return false;
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}
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/* Although POSIX says that two files are identical if st_ino and st_dev
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are the same, all too many file systems incorrectly assign the same
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(device, inode) pair to two distinct files, including:
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- GNU/Linux NFS servers that export all local file systems as a
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single NFS file system, if a local (device, inode) pair collides
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with another one after hashing.
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- GNU/Linux NFS servers that export Btrfs file systems with subvolumes,
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if the Btrfs (subvolume, inode) hashing function collides.
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See <https://lwn.net/Articles/866709/>.
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- Qemu virtio-fs before Qemu 5.2 (2020); see
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<https://bugzilla.redhat.com/show_bug.cgi?id=1795362>.
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- Network Appliance NFS servers in snapshot directories; see
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Network Appliance bug #195.
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- ClearCase MVFS; see bug id ATRia04618.
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Check whether two files that purport to be the same have the same
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attributes, to work around instances of this common bug.
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Birthtime is special as st_birthtime is not portable, but when
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either birthtime is available comparing them should be definitive. */
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#if (defined HAVE_STRUCT_STAT_ST_BIRTHTIMESPEC_TV_NSEC \
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|| defined HAVE_STRUCT_STAT_ST_BIRTHTIM_TV_NSEC \
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|| defined HAVE_STRUCT_STAT_ST_BIRTHTIMENSEC \
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|| (defined _WIN32 && ! defined __CYGWIN__))
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/* If either file has a birth time, comparing them is definitive. */
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struct timespec sbirth = get_stat_birthtime (s);
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struct timespec tbirth = get_stat_birthtime (t);
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if (0 <= sbirth.tv_nsec || 0 <= tbirth.tv_nsec)
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return timespec_cmp (sbirth, tbirth) == 0;
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#endif
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/* Fall back on comparing other easily-obtainable attributes.
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Do not inspect all attributes, only attributes useful in checking
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for the bug. Check attributes most likely to differ first.
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It's possible for two distinct files on a buggy file system to have
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the same attributes, but it's not worth slowing down all
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implementations (or complicating the configuration) to cater to
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these rare cases in buggy implementations.
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It's also possible for the same file to appear to be two different
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files, e.g., because its permissions were changed between the two
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stat calls. In that case cmp and diff will do extra work
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to determine that the file contents are the same. */
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return (get_stat_ctime_ns (s) == get_stat_ctime_ns (t)
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&& get_stat_mtime_ns (s) == get_stat_mtime_ns (t)
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&& s->st_ctime == t->st_ctime
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&& s->st_mtime == t->st_mtime
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&& s->st_size == t->st_size
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&& s->st_mode == t->st_mode
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&& s->st_uid == t->st_uid
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&& s->st_gid == t->st_gid
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&& s->st_nlink == t->st_nlink);
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}
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/* Use this for code that could be used if diff ever cares about
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st_size for symlinks, which it doesn't now. */
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#define care_about_symlink_size false
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/* Return the number of bytes in the file described by *S,
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or -1 if this cannot be determined reliably. */
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off_t
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stat_size (struct stat const *s)
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{
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mode_t mode = s->st_mode;
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off_t size = s->st_size;
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if (size < 0)
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return -1;
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if (! (S_ISREG (mode) || (care_about_symlink_size && S_ISLNK (mode))
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|| S_TYPEISSHM (s) || S_TYPEISTMO (s)))
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return -1;
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#if (defined __linux__ || defined __CYGWIN__ || defined __FreeBSD__ \
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|| defined __NetBSD__ || defined _AIX)
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/* On some systems, /proc files with size zero are suspect. */
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if (size == 0)
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{
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static dev_t proc_dev;
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if (!proc_dev)
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{
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struct stat st;
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st.st_dev = 0;
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lstat ("/proc/self", &st);
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proc_dev = st.st_dev;
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}
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if (proc_dev && s->st_dev == proc_dev)
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return -1;
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}
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#endif
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#if care_about_symlink_size && (defined __linux__ || defined __ANDROID__)
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/* Symlinks have suspect sizes on Linux kernels before 5.15,
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due to bugs in fscrypt. */
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if (S_ISLNK (mode))
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{
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static signed char symlink_size_ok;
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if (! symlink_size_ok)
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{
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struct utsname name;
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uname (&name);
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char *p = name.release;
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symlink_size_ok = ((p[1] != '.' || '5' < p[0]
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|| (p[0] == '5'
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&& ('1' <= p[2] && p[2] <= '9')
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&& ('0' <= p[3] && p[3] <= '9')
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&& ('5' <= p[3]
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|| ('0' <= p[4] && p[4] <= '9'))))
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? 1 : -1);
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}
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if (symlink_size_ok < 0)
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return -1;
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}
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#endif
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return size;
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}
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