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termux-packages/packages/libelf/src-ar.c.patch
Fredrik Fornwall 66aea0b5df libelf: Keep the libelf part of elfutils 
While all of elfutils does not build with clang, the libelf part does
and is needed by ltrace. So keep libelf as a package and let it replace
elfutils for now.
2018-08-17 21:32:56 +02:00

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diff -u -r ../elfutils-0.173/src/ar.c ./src/ar.c
--- ../elfutils-0.173/src/ar.c 2018-03-22 21:52:20.000000000 +0100
+++ ./src/ar.c 2018-07-02 01:54:15.201243245 +0200
@@ -1,1555 +1 @@
-/* Create, modify, and extract from archives.
- Copyright (C) 2005-2012, 2016, 2017 Red Hat, Inc.
- This file is part of elfutils.
- Written by Ulrich Drepper <drepper@redhat.com>, 2005.
-
- This file is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 3 of the License, or
- (at your option) any later version.
-
- elfutils is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>. */
-
-#ifdef HAVE_CONFIG_H
-# include <config.h>
-#endif
-
-#include <argp.h>
-#include <assert.h>
-#include <error.h>
-#include <fcntl.h>
-#include <gelf.h>
-#include <libintl.h>
-#include <limits.h>
-#include <locale.h>
-#include <search.h>
-#include <stdbool.h>
-#include <stdlib.h>
-#include <stdio.h>
-#include <stdio_ext.h>
-#include <string.h>
-#include <time.h>
-#include <unistd.h>
-#include <sys/mman.h>
-#include <sys/stat.h>
-#include <sys/time.h>
-
-#include <system.h>
-#include <printversion.h>
-
-#include "arlib.h"
-
-
-/* Name and version of program. */
-ARGP_PROGRAM_VERSION_HOOK_DEF = print_version;
-
-/* Prototypes for local functions. */
-static int do_oper_extract (int oper, const char *arfname, char **argv,
- int argc, long int instance);
-static int do_oper_delete (const char *arfname, char **argv, int argc,
- long int instance);
-static int do_oper_insert (int oper, const char *arfname, char **argv,
- int argc, const char *member);
-
-
-/* Bug report address. */
-ARGP_PROGRAM_BUG_ADDRESS_DEF = PACKAGE_BUGREPORT;
-
-
-/* Definitions of arguments for argp functions. */
-static const struct argp_option options[] =
-{
- { NULL, 0, NULL, 0, N_("Commands:"), 1 },
- { NULL, 'd', NULL, 0, N_("Delete files from archive."), 0 },
- { NULL, 'm', NULL, 0, N_("Move files in archive."), 0 },
- { NULL, 'p', NULL, 0, N_("Print files in archive."), 0 },
- { NULL, 'q', NULL, 0, N_("Quick append files to archive."), 0 },
- { NULL, 'r', NULL, 0,
- N_("Replace existing or insert new file into archive."), 0 },
- { NULL, 't', NULL, 0, N_("Display content of archive."), 0 },
- { NULL, 'x', NULL, 0, N_("Extract files from archive."), 0 },
-
- { NULL, 0, NULL, 0, N_("Command Modifiers:"), 2 },
- { NULL, 'o', NULL, 0, N_("Preserve original dates."), 0 },
- { NULL, 'N', NULL, 0, N_("Use instance [COUNT] of name."), 0 },
- { NULL, 'C', NULL, 0,
- N_("Do not replace existing files with extracted files."), 0 },
- { NULL, 'T', NULL, 0, N_("Allow filename to be truncated if necessary."),
- 0 },
- { NULL, 'v', NULL, 0, N_("Provide verbose output."), 0 },
- { NULL, 's', NULL, 0, N_("Force regeneration of symbol table."), 0 },
- { NULL, 'a', NULL, 0, N_("Insert file after [MEMBER]."), 0 },
- { NULL, 'b', NULL, 0, N_("Insert file before [MEMBER]."), 0 },
- { NULL, 'i', NULL, 0, N_("Same as -b."), 0 },
- { NULL, 'c', NULL, 0, N_("Suppress message when library has to be created."),
- 0 },
- { NULL, 'P', NULL, 0, N_("Use full path for file matching."), 0 },
- { NULL, 'u', NULL, 0, N_("Update only older files in archive."), 0 },
-
- { NULL, 0, NULL, 0, NULL, 0 }
-};
-
-/* Short description of program. */
-static const char doc[] = N_("Create, modify, and extract from archives.");
-
-/* Strings for arguments in help texts. */
-static const char args_doc[] = N_("[MEMBER] [COUNT] ARCHIVE [FILE...]");
-
-/* Prototype for option handler. */
-static error_t parse_opt (int key, char *arg, struct argp_state *state);
-
-/* Data structure to communicate with argp functions. */
-static struct argp argp =
-{
- options, parse_opt, args_doc, doc, arlib_argp_children, NULL, NULL
-};
-
-
-/* What operation to perform. */
-static enum
- {
- oper_none,
- oper_delete,
- oper_move,
- oper_print,
- oper_qappend,
- oper_replace,
- oper_list,
- oper_extract
- } operation;
-
-/* Modifiers. */
-static bool verbose;
-static bool preserve_dates;
-static bool instance_specifed;
-static bool dont_replace_existing;
-static bool allow_truncate_fname;
-static bool force_symtab;
-static bool suppress_create_msg;
-static bool full_path;
-static bool update_newer;
-static enum { ipos_none, ipos_before, ipos_after } ipos;
-
-
-int
-main (int argc, char *argv[])
-{
- /* We use no threads here which can interfere with handling a stream. */
- (void) __fsetlocking (stdin, FSETLOCKING_BYCALLER);
- (void) __fsetlocking (stdout, FSETLOCKING_BYCALLER);
- (void) __fsetlocking (stderr, FSETLOCKING_BYCALLER);
-
- /* Set locale. */
- (void) setlocale (LC_ALL, "");
-
- /* Make sure the message catalog can be found. */
- (void) bindtextdomain (PACKAGE_TARNAME, LOCALEDIR);
-
- /* Initialize the message catalog. */
- (void) textdomain (PACKAGE_TARNAME);
-
- /* For historical reasons the options in the first parameter need
- not be preceded by a dash. Add it now if necessary. */
- if (argc > 1 && argv[1][0] != '-')
- {
- size_t len = strlen (argv[1]) + 1;
- char *newp = alloca (len + 1);
- newp[0] = '-';
- memcpy (&newp[1], argv[1], len);
- argv[1] = newp;
- }
-
- /* Parse and process arguments. */
- int remaining;
- (void) argp_parse (&argp, argc, argv, ARGP_IN_ORDER, &remaining, NULL);
-
- /* Tell the library which version we are expecting. */
- (void) elf_version (EV_CURRENT);
-
- /* Handle the [MEMBER] parameter. */
- const char *member = NULL;
- if (ipos != ipos_none)
- {
- /* Only valid for certain operations. */
- if (operation != oper_move && operation != oper_replace)
- error (1, 0, gettext ("\
-'a', 'b', and 'i' are only allowed with the 'm' and 'r' options"));
-
- if (remaining == argc)
- {
- error (0, 0, gettext ("\
-MEMBER parameter required for 'a', 'b', and 'i' modifiers"));
- argp_help (&argp, stderr, ARGP_HELP_USAGE | ARGP_HELP_SEE,
- program_invocation_short_name);
- exit (EXIT_FAILURE);
- }
-
- member = argv[remaining++];
- }
-
- /* Handle the [COUNT] parameter. */
- long int instance = -1;
- if (instance_specifed)
- {
- /* Only valid for certain operations. */
- if (operation != oper_extract && operation != oper_delete)
- error (1, 0, gettext ("\
-'N' is only meaningful with the 'x' and 'd' options"));
-
- if (remaining == argc)
- {
- error (0, 0, gettext ("COUNT parameter required"));
- argp_help (&argp, stderr, ARGP_HELP_SEE,
- program_invocation_short_name);
- exit (EXIT_FAILURE);
- }
-
- char *endp;
- errno = 0;
- if (((instance = strtol (argv[remaining], &endp, 10)) == LONG_MAX
- && errno == ERANGE)
- || instance <= 0
- || *endp != '\0')
- error (1, 0, gettext ("invalid COUNT parameter %s"), argv[remaining]);
-
- ++remaining;
- }
-
- if ((dont_replace_existing || allow_truncate_fname)
- && unlikely (operation != oper_extract))
- error (1, 0, gettext ("'%c' is only meaningful with the 'x' option"),
- dont_replace_existing ? 'C' : 'T');
-
- /* There must at least be one more parameter specifying the archive. */
- if (remaining == argc)
- {
- error (0, 0, gettext ("archive name required"));
- argp_help (&argp, stderr, ARGP_HELP_SEE, program_invocation_short_name);
- exit (EXIT_FAILURE);
- }
-
- const char *arfname = argv[remaining++];
- argv += remaining;
- argc -= remaining;
-
- int status;
- switch (operation)
- {
- case oper_none:
- error (0, 0, gettext ("command option required"));
- argp_help (&argp, stderr, ARGP_HELP_STD_ERR,
- program_invocation_short_name);
- status = 1;
- break;
-
- case oper_list:
- case oper_print:
- status = do_oper_extract (operation, arfname, argv, argc, -1);
- break;
-
- case oper_extract:
- status = do_oper_extract (operation, arfname, argv, argc, instance);
- break;
-
- case oper_delete:
- status = do_oper_delete (arfname, argv, argc, instance);
- break;
-
- case oper_move:
- case oper_qappend:
- case oper_replace:
- status = do_oper_insert (operation, arfname, argv, argc, member);
- break;
-
- default:
- assert (! "should not happen");
- status = 1;
- break;
- }
-
- return status;
-}
-
-
-/* Handle program arguments. */
-static error_t
-parse_opt (int key, char *arg __attribute__ ((unused)),
- struct argp_state *state __attribute__ ((unused)))
-{
- switch (key)
- {
- case 'd':
- case 'm':
- case 'p':
- case 'q':
- case 'r':
- case 't':
- case 'x':
- if (operation != oper_none)
- {
- error (0, 0, gettext ("More than one operation specified"));
- argp_help (&argp, stderr, ARGP_HELP_SEE,
- program_invocation_short_name);
- exit (EXIT_FAILURE);
- }
-
- switch (key)
- {
- case 'd':
- operation = oper_delete;
- break;
- case 'm':
- operation = oper_move;
- break;
- case 'p':
- operation = oper_print;
- break;
- case 'q':
- operation = oper_qappend;
- break;
- case 'r':
- operation = oper_replace;
- break;
- case 't':
- operation = oper_list;
- break;
- case 'x':
- operation = oper_extract;
- break;
- }
- break;
-
- case 'a':
- ipos = ipos_after;
- break;
-
- case 'b':
- case 'i':
- ipos = ipos_before;
- break;
-
- case 'c':
- suppress_create_msg = true;
- break;
-
- case 'C':
- dont_replace_existing = true;
- break;
-
- case 'N':
- instance_specifed = true;
- break;
-
- case 'o':
- preserve_dates = true;
- break;
-
- case 'P':
- full_path = true;
- break;
-
- case 's':
- force_symtab = true;
- break;
-
- case 'T':
- allow_truncate_fname = true;
- break;
-
- case 'u':
- update_newer = true;
- break;
-
- case 'v':
- verbose = true;
- break;
-
- default:
- return ARGP_ERR_UNKNOWN;
- }
- return 0;
-}
-
-
-static int
-open_archive (const char *arfname, int flags, int mode, Elf **elf,
- struct stat *st, bool miss_allowed)
-{
- int fd = open (arfname, flags, mode);
- if (fd == -1)
- {
- if (miss_allowed)
- return -1;
-
- error (EXIT_FAILURE, errno, gettext ("cannot open archive '%s'"),
- arfname);
- }
-
- if (elf != NULL)
- {
- Elf_Cmd cmd = flags == O_RDONLY ? ELF_C_READ_MMAP : ELF_C_RDWR_MMAP;
-
- *elf = elf_begin (fd, cmd, NULL);
- if (*elf == NULL)
- error (EXIT_FAILURE, 0, gettext ("cannot open archive '%s': %s"),
- arfname, elf_errmsg (-1));
-
- if (flags == O_RDONLY && elf_kind (*elf) != ELF_K_AR)
- error (EXIT_FAILURE, 0, gettext ("%s: not an archive file"), arfname);
- }
-
- if (st != NULL && fstat (fd, st) != 0)
- error (EXIT_FAILURE, errno, gettext ("cannot stat archive '%s'"),
- arfname);
-
- return fd;
-}
-
-
-static void
-not_found (int argc, char *argv[argc], bool found[argc])
-{
- for (int i = 0; i < argc; ++i)
- if (!found[i])
- printf (gettext ("no entry %s in archive\n"), argv[i]);
-}
-
-
-static int
-copy_content (Elf *elf, int newfd, off_t off, size_t n)
-{
- size_t len;
- char *rawfile = elf_rawfile (elf, &len);
-
- assert (off + n <= len);
-
- /* Tell the kernel we will read all the pages sequentially. */
- size_t ps = sysconf (_SC_PAGESIZE);
- if (n > 2 * ps)
- posix_madvise (rawfile + (off & ~(ps - 1)), n, POSIX_MADV_SEQUENTIAL);
-
- return write_retry (newfd, rawfile + off, n) != (ssize_t) n;
-}
-
-
-static int
-do_oper_extract (int oper, const char *arfname, char **argv, int argc,
- long int instance)
-{
- bool found[argc > 0 ? argc : 1];
- memset (found, '\0', sizeof (found));
-
- size_t name_max = 0;
- inline bool should_truncate_fname (void)
- {
- if (errno == ENAMETOOLONG && allow_truncate_fname)
- {
- if (name_max == 0)
- {
- long int len = pathconf (".", _PC_NAME_MAX);
- if (len > 0)
- name_max = len;
- }
- return name_max != 0;
- }
- return false;
- }
-
- off_t index_off = -1;
- size_t index_size = 0;
- off_t cur_off = SARMAG;
-
- int status = 0;
- Elf *elf;
- int fd = open_archive (arfname, O_RDONLY, 0, &elf, NULL, false);
-
- if (hcreate (2 * argc) == 0)
- error (EXIT_FAILURE, errno, gettext ("cannot create hash table"));
-
- for (int cnt = 0; cnt < argc; ++cnt)
- {
- ENTRY entry = { .key = argv[cnt], .data = &argv[cnt] };
- if (hsearch (entry, ENTER) == NULL)
- error (EXIT_FAILURE, errno,
- gettext ("cannot insert into hash table"));
- }
-
- struct stat st;
- if (force_symtab)
- {
- if (fstat (fd, &st) != 0)
- {
- error (0, errno, gettext ("cannot stat '%s'"), arfname);
- close (fd);
- return 1;
- }
- arlib_init ();
- }
-
- Elf_Cmd cmd = ELF_C_READ_MMAP;
- Elf *subelf;
- while ((subelf = elf_begin (fd, cmd, elf)) != NULL)
- {
- Elf_Arhdr *arhdr = elf_getarhdr (subelf);
-
- if (strcmp (arhdr->ar_name, "/") == 0)
- {
- index_off = elf_getaroff (subelf);
- index_size = arhdr->ar_size;
- goto next;
- }
- if (strcmp (arhdr->ar_name, "//") == 0)
- goto next;
-
- if (force_symtab)
- {
- arlib_add_symbols (elf, arfname, arhdr->ar_name, cur_off);
- cur_off += (((arhdr->ar_size + 1) & ~((off_t) 1))
- + sizeof (struct ar_hdr));
- }
-
- bool do_extract = argc <= 0;
- if (!do_extract)
- {
- ENTRY entry;
- entry.key = arhdr->ar_name;
- ENTRY *res = hsearch (entry, FIND);
- if (res != NULL && (instance < 0 || instance-- == 0)
- && !found[(char **) res->data - argv])
- found[(char **) res->data - argv] = do_extract = true;
- }
-
- if (do_extract)
- {
- if (verbose)
- {
- if (oper == oper_print)
- {
- printf ("\n<%s>\n\n", arhdr->ar_name);
-
- /* We have to flush now because now we use the descriptor
- directly. */
- fflush (stdout);
- }
- else if (oper == oper_list)
- {
- char datestr[100];
- strftime (datestr, sizeof (datestr), "%b %e %H:%M %Y",
- localtime (&arhdr->ar_date));
-
- printf ("%c%c%c%c%c%c%c%c%c %u/%u %6ju %s %s\n",
- (arhdr->ar_mode & S_IRUSR) ? 'r' : '-',
- (arhdr->ar_mode & S_IWUSR) ? 'w' : '-',
- (arhdr->ar_mode & S_IXUSR)
- ? ((arhdr->ar_mode & S_ISUID) ? 's' : 'x')
- : ((arhdr->ar_mode & S_ISUID) ? 'S' : '-'),
- (arhdr->ar_mode & S_IRGRP) ? 'r' : '-',
- (arhdr->ar_mode & S_IWGRP) ? 'w' : '-',
- (arhdr->ar_mode & S_IXGRP)
- ? ((arhdr->ar_mode & S_ISGID) ? 's' : 'x')
- : ((arhdr->ar_mode & S_ISGID) ? 'S' : '-'),
- (arhdr->ar_mode & S_IROTH) ? 'r' : '-',
- (arhdr->ar_mode & S_IWOTH) ? 'w' : '-',
- (arhdr->ar_mode & S_IXOTH)
- ? ((arhdr->ar_mode & S_ISVTX) ? 't' : 'x')
- : ((arhdr->ar_mode & S_ISVTX) ? 'T' : '-'),
- arhdr->ar_uid,
- arhdr->ar_gid,
- (uintmax_t) arhdr->ar_size,
- datestr,
- arhdr->ar_name);
- }
- else
- printf ("x - %s\n", arhdr->ar_name);
- }
-
- if (oper == oper_list)
- {
- if (!verbose)
- puts (arhdr->ar_name);
-
- goto next;
- }
-
- size_t nleft;
- char *data = elf_rawfile (subelf, &nleft);
- if (data == NULL)
- {
- error (0, 0, gettext ("cannot read content of %s: %s"),
- arhdr->ar_name, elf_errmsg (-1));
- status = 1;
- goto next;
- }
-
- int xfd;
- char tempfname[] = "XXXXXX";
- bool use_mkstemp = true;
-
- if (oper == oper_print)
- xfd = STDOUT_FILENO;
- else
- {
- xfd = mkstemp (tempfname);
- if (unlikely (xfd == -1))
- {
- /* We cannot create a temporary file. Try to overwrite
- the file or create it if it does not exist. */
- int flags = O_WRONLY | O_CREAT;
- if (dont_replace_existing)
- flags |= O_EXCL;
- else
- flags |= O_TRUNC;
- xfd = open (arhdr->ar_name, flags, 0600);
- if (unlikely (xfd == -1))
- {
- int printlen = INT_MAX;
-
- if (should_truncate_fname ())
- {
- /* Try to truncate the name. First find out by how
- much. */
- printlen = name_max;
- char truncfname[name_max + 1];
- *((char *) mempcpy (truncfname, arhdr->ar_name,
- name_max)) = '\0';
-
- xfd = open (truncfname, flags, 0600);
- }
-
- if (xfd == -1)
- {
- error (0, errno, gettext ("cannot open %.*s"),
- (int) printlen, arhdr->ar_name);
- status = 1;
- goto next;
- }
- }
-
- use_mkstemp = false;
- }
- }
-
- ssize_t n;
- while ((n = TEMP_FAILURE_RETRY (write (xfd, data, nleft))) != -1)
- {
- nleft -= n;
- if (nleft == 0)
- break;
- data += n;
- }
-
- if (unlikely (n == -1))
- {
- error (0, errno, gettext ("failed to write %s"), arhdr->ar_name);
- status = 1;
- unlink (tempfname);
- close (xfd);
- goto next;
- }
-
- if (oper != oper_print)
- {
- /* Fix up the mode. */
- if (unlikely (fchmod (xfd, arhdr->ar_mode) != 0))
- {
- error (0, errno, gettext ("cannot change mode of %s"),
- arhdr->ar_name);
- status = 0;
- }
-
- if (preserve_dates)
- {
- struct timespec tv[2];
- tv[0].tv_sec = arhdr->ar_date;
- tv[0].tv_nsec = 0;
- tv[1].tv_sec = arhdr->ar_date;
- tv[1].tv_nsec = 0;
-
- if (unlikely (futimens (xfd, tv) != 0))
- {
- error (0, errno,
- gettext ("cannot change modification time of %s"),
- arhdr->ar_name);
- status = 1;
- }
- }
-
- /* If we used a temporary file, move it do the right
- name now. */
- if (use_mkstemp)
- {
- int r;
-
- if (dont_replace_existing)
- {
- r = link (tempfname, arhdr->ar_name);
- if (likely (r == 0))
- unlink (tempfname);
- }
- else
- r = rename (tempfname, arhdr->ar_name);
-
- if (unlikely (r) != 0)
- {
- int printlen = INT_MAX;
-
- if (should_truncate_fname ())
- {
- /* Try to truncate the name. First find out by how
- much. */
- printlen = name_max;
- char truncfname[name_max + 1];
- *((char *) mempcpy (truncfname, arhdr->ar_name,
- name_max)) = '\0';
-
- if (dont_replace_existing)
- {
- r = link (tempfname, truncfname);
- if (likely (r == 0))
- unlink (tempfname);
- }
- else
- r = rename (tempfname, truncfname);
- }
-
- if (r != 0)
- {
- error (0, errno, gettext ("\
-cannot rename temporary file to %.*s"),
- printlen, arhdr->ar_name);
- unlink (tempfname);
- status = 1;
- }
- }
- }
-
- close (xfd);
- }
- }
-
- next:
- cmd = elf_next (subelf);
- if (elf_end (subelf) != 0)
- error (1, 0, "%s: %s", arfname, elf_errmsg (-1));
- }
-
- hdestroy ();
-
- if (force_symtab)
- {
- arlib_finalize ();
-
- if (symtab.symsnamelen != 0
- /* We have to rewrite the file also if it initially had an index
- but now does not need one anymore. */
- || (symtab.symsnamelen == 0 && index_size != 0))
- {
- char tmpfname[strlen (arfname) + 7];
- strcpy (stpcpy (tmpfname, arfname), "XXXXXX");
- int newfd = mkstemp (tmpfname);
- if (unlikely (newfd == -1))
- {
- nonew:
- error (0, errno, gettext ("cannot create new file"));
- status = 1;
- }
- else
- {
- /* Create the header. */
- if (unlikely (write_retry (newfd, ARMAG, SARMAG) != SARMAG))
- {
- // XXX Use /prof/self/fd/%d ???
- nonew_unlink:
- unlink (tmpfname);
- if (newfd != -1)
- close (newfd);
- goto nonew;
- }
-
- /* Create the new file. There are three parts as far we are
- concerned: 1. original context before the index, 2. the
- new index, 3. everything after the new index. */
- off_t rest_off;
- if (index_off != -1)
- rest_off = (index_off + sizeof (struct ar_hdr)
- + ((index_size + 1) & ~1ul));
- else
- rest_off = SARMAG;
-
- if ((symtab.symsnamelen != 0
- && ((write_retry (newfd, symtab.symsoff,
- symtab.symsofflen)
- != (ssize_t) symtab.symsofflen)
- || (write_retry (newfd, symtab.symsname,
- symtab.symsnamelen)
- != (ssize_t) symtab.symsnamelen)))
- /* Even if the original file had content before the
- symbol table, we write it in the correct order. */
- || (index_off != SARMAG
- && copy_content (elf, newfd, SARMAG, index_off - SARMAG))
- || copy_content (elf, newfd, rest_off, st.st_size - rest_off)
- /* Set the mode of the new file to the same values the
- original file has. */
- || fchmod (newfd, st.st_mode & ALLPERMS) != 0
- /* Never complain about fchown failing. */
- || (({asm ("" :: "r" (fchown (newfd, st.st_uid,
- st.st_gid))); }),
- close (newfd) != 0)
- || (newfd = -1, rename (tmpfname, arfname) != 0))
- goto nonew_unlink;
- }
- }
- }
-
- elf_end (elf);
-
- close (fd);
-
- not_found (argc, argv, found);
-
- return status;
-}
-
-
-struct armem
-{
- off_t off;
- off_t old_off;
- size_t size;
- long int long_name_off;
- struct armem *next;
- void *mem;
- time_t sec;
- uid_t uid;
- gid_t gid;
- mode_t mode;
- const char *name;
- Elf *elf;
-};
-
-
-static int
-write_member (struct armem *memb, off_t *startp, off_t *lenp, Elf *elf,
- off_t end_off, int newfd)
-{
- struct ar_hdr arhdr;
- /* The ar_name is not actually zero teminated, but we need that for
- snprintf. Also if the name is too long, then the string starts
- with '/' plus an index off number (decimal). */
- char tmpbuf[sizeof (arhdr.ar_name) + 2];
-
- bool changed_header = memb->long_name_off != -1;
- if (changed_header)
- {
- /* In case of a long file name we assume the archive header
- changed and we write it here. */
- memcpy (&arhdr, elf_rawfile (elf, NULL) + *startp, sizeof (arhdr));
-
- snprintf (tmpbuf, sizeof (tmpbuf), "/%-*ld",
- (int) sizeof (arhdr.ar_name), memb->long_name_off);
- changed_header = memcmp (arhdr.ar_name, tmpbuf,
- sizeof (arhdr.ar_name)) != 0;
- }
-
- /* If the files are adjacent in the old file extend the range. */
- if (*startp != -1 && !changed_header && *startp + *lenp == memb->old_off)
- {
- /* Extend the current range. */
- *lenp += (memb->next != NULL
- ? memb->next->off : end_off) - memb->off;
- return 0;
- }
-
- /* Write out the old range. */
- if (*startp != -1 && copy_content (elf, newfd, *startp, *lenp))
- return -1;
-
- *startp = memb->old_off;
- *lenp = (memb->next != NULL ? memb->next->off : end_off) - memb->off;
-
- if (changed_header)
- {
- memcpy (arhdr.ar_name, tmpbuf, sizeof (arhdr.ar_name));
-
- if (unlikely (write_retry (newfd, &arhdr, sizeof (arhdr))
- != sizeof (arhdr)))
- return -1;
-
- *startp += sizeof (struct ar_hdr);
- assert ((size_t) *lenp >= sizeof (struct ar_hdr));
- *lenp -= sizeof (struct ar_hdr);
- }
-
- return 0;
-}
-
-/* Store the name in the long name table if necessary.
- Record its offset or -1 if we did not need to use the table. */
-static void
-remember_long_name (struct armem *mem, const char *name, size_t namelen)
-{
- mem->long_name_off = (namelen > MAX_AR_NAME_LEN
- ? arlib_add_long_name (name, namelen)
- : -1l);
-}
-
-static int
-do_oper_delete (const char *arfname, char **argv, int argc,
- long int instance)
-{
- bool *found = alloca (sizeof (bool) * argc);
- memset (found, '\0', sizeof (bool) * argc);
-
- /* List of the files we keep. */
- struct armem *to_copy = NULL;
-
- int status = 0;
- Elf *elf;
- struct stat st;
- int fd = open_archive (arfname, O_RDONLY, 0, &elf, &st, false);
-
- if (hcreate (2 * argc) == 0)
- error (EXIT_FAILURE, errno, gettext ("cannot create hash table"));
-
- for (int cnt = 0; cnt < argc; ++cnt)
- {
- ENTRY entry = { .key = argv[cnt], .data = &argv[cnt] };
- if (hsearch (entry, ENTER) == NULL)
- error (EXIT_FAILURE, errno,
- gettext ("cannot insert into hash table"));
- }
-
- arlib_init ();
-
- off_t cur_off = SARMAG;
- Elf_Cmd cmd = ELF_C_READ_MMAP;
- Elf *subelf;
- while ((subelf = elf_begin (fd, cmd, elf)) != NULL)
- {
- Elf_Arhdr *arhdr = elf_getarhdr (subelf);
-
- /* Ignore the symbol table and the long file name table here. */
- if (strcmp (arhdr->ar_name, "/") == 0
- || strcmp (arhdr->ar_name, "//") == 0)
- goto next;
-
- bool do_delete = argc <= 0;
- if (!do_delete)
- {
- ENTRY entry;
- entry.key = arhdr->ar_name;
- ENTRY *res = hsearch (entry, FIND);
- if (res != NULL && (instance < 0 || instance-- == 0)
- && !found[(char **) res->data - argv])
- found[(char **) res->data - argv] = do_delete = true;
- }
-
- if (do_delete)
- {
- if (verbose)
- printf ("d - %s\n", arhdr->ar_name);
- }
- else
- {
- struct armem *newp = alloca (sizeof (struct armem));
- newp->old_off = elf_getaroff (subelf);
- newp->off = cur_off;
-
- cur_off += (((arhdr->ar_size + 1) & ~((off_t) 1))
- + sizeof (struct ar_hdr));
-
- if (to_copy == NULL)
- to_copy = newp->next = newp;
- else
- {
- newp->next = to_copy->next;
- to_copy = to_copy->next = newp;
- }
-
- /* If we recreate the symbol table read the file's symbol
- table now. */
- arlib_add_symbols (subelf, arfname, arhdr->ar_name, newp->off);
-
- /* Remember long file names. */
- remember_long_name (newp, arhdr->ar_name, strlen (arhdr->ar_name));
- }
-
- next:
- cmd = elf_next (subelf);
- if (elf_end (subelf) != 0)
- error (1, 0, "%s: %s", arfname, elf_errmsg (-1));
- }
-
- arlib_finalize ();
-
- hdestroy ();
-
- /* Create a new, temporary file in the same directory as the
- original file. */
- char tmpfname[strlen (arfname) + 7];
- strcpy (stpcpy (tmpfname, arfname), "XXXXXX");
- int newfd = mkstemp (tmpfname);
- if (unlikely (newfd == -1))
- goto nonew;
-
- /* Create the header. */
- if (unlikely (write_retry (newfd, ARMAG, SARMAG) != SARMAG))
- {
- // XXX Use /prof/self/fd/%d ???
- nonew_unlink:
- unlink (tmpfname);
- if (newfd != -1)
- close (newfd);
- nonew:
- error (0, errno, gettext ("cannot create new file"));
- status = 1;
- goto errout;
- }
-
- /* If the archive is empty that is all we have to do. */
- if (likely (to_copy != NULL))
- {
- /* Write the symbol table or the long file name table or both. */
- if (symtab.symsnamelen != 0
- && ((write_retry (newfd, symtab.symsoff, symtab.symsofflen)
- != (ssize_t) symtab.symsofflen)
- || (write_retry (newfd, symtab.symsname, symtab.symsnamelen)
- != (ssize_t) symtab.symsnamelen)))
- goto nonew_unlink;
-
- if (symtab.longnameslen > sizeof (struct ar_hdr)
- && (write_retry (newfd, symtab.longnames, symtab.longnameslen)
- != (ssize_t) symtab.longnameslen))
- goto nonew_unlink;
-
- /* NULL-terminate the list of files to copy. */
- struct armem *last = to_copy;
- to_copy = to_copy->next;
- last->next = NULL;
-
- off_t start = -1;
- off_t len = -1;
-
- do
- if (write_member (to_copy, &start, &len, elf, cur_off, newfd) != 0)
- goto nonew_unlink;
- while ((to_copy = to_copy->next) != NULL);
-
- /* Write the last part. */
- if (copy_content (elf, newfd, start, len))
- goto nonew_unlink;
- }
-
- /* Set the mode of the new file to the same values the original file
- has. */
- if (fchmod (newfd, st.st_mode & ALLPERMS) != 0
- /* Never complain about fchown failing. */
- || (({asm ("" :: "r" (fchown (newfd, st.st_uid, st.st_gid))); }),
- close (newfd) != 0)
- || (newfd = -1, rename (tmpfname, arfname) != 0))
- goto nonew_unlink;
-
- errout:
- elf_end (elf);
-
- arlib_fini ();
-
- close (fd);
-
- not_found (argc, argv, found);
-
- return status;
-}
-
-
-/* Prints the given value in the given buffer without a trailing zero char.
- Returns false if the given value doesn't fit in the given buffer. */
-static bool
-no0print (bool ofmt, char *buf, int bufsize, long int val)
-{
- char tmpbuf[bufsize + 1];
- int ret = snprintf (tmpbuf, sizeof (tmpbuf), ofmt ? "%-*lo" : "%-*ld",
- bufsize, val);
- if (ret >= (int) sizeof (tmpbuf))
- return false;
- memcpy (buf, tmpbuf, bufsize);
- return true;
-}
-
-
-static int
-do_oper_insert (int oper, const char *arfname, char **argv, int argc,
- const char *member)
-{
- int status = 0;
- Elf *elf = NULL;
- struct stat st;
- int fd = open_archive (arfname, O_RDONLY, 0, &elf, &st, oper != oper_move);
-
- /* List of the files we keep. */
- struct armem *all = NULL;
- struct armem *after_memberelem = NULL;
- struct armem **found = alloca (sizeof (*found) * argc);
- memset (found, '\0', sizeof (*found) * argc);
-
- arlib_init ();
-
- /* Initialize early for no_old case. */
- off_t cur_off = SARMAG;
-
- if (fd == -1)
- {
- if (!suppress_create_msg)
- fprintf (stderr, "%s: creating %s\n",
- program_invocation_short_name, arfname);
-
- goto no_old;
- }
-
- /* Store the names of all files from the command line in a hash
- table so that we can match it. Note that when no file name is
- given we are basically doing nothing except recreating the
- index. */
- if (oper != oper_qappend)
- {
- if (hcreate (2 * argc) == 0)
- error (EXIT_FAILURE, errno, gettext ("cannot create hash table"));
-
- for (int cnt = 0; cnt < argc; ++cnt)
- {
- ENTRY entry;
- entry.key = full_path ? argv[cnt] : basename (argv[cnt]);
- entry.data = &argv[cnt];
- if (hsearch (entry, ENTER) == NULL)
- error (EXIT_FAILURE, errno,
- gettext ("cannot insert into hash table"));
- }
- }
-
- /* While iterating over the current content of the archive we must
- determine a number of things: which archive members to keep,
- which are replaced, and where to insert the new members. */
- Elf_Cmd cmd = ELF_C_READ_MMAP;
- Elf *subelf;
- while ((subelf = elf_begin (fd, cmd, elf)) != NULL)
- {
- Elf_Arhdr *arhdr = elf_getarhdr (subelf);
-
- /* Ignore the symbol table and the long file name table here. */
- if (strcmp (arhdr->ar_name, "/") == 0
- || strcmp (arhdr->ar_name, "//") == 0)
- goto next;
-
- struct armem *newp = alloca (sizeof (struct armem));
- newp->old_off = elf_getaroff (subelf);
- newp->size = arhdr->ar_size;
- newp->sec = arhdr->ar_date;
- newp->mem = NULL;
-
- /* Remember long file names. */
- remember_long_name (newp, arhdr->ar_name, strlen (arhdr->ar_name));
-
- /* Check whether this is a file we are looking for. */
- if (oper != oper_qappend)
- {
- /* Check whether this is the member used as the insert point. */
- if (member != NULL && strcmp (arhdr->ar_name, member) == 0)
- {
- /* Note that all == NULL means insert at the beginning. */
- if (ipos == ipos_before)
- after_memberelem = all;
- else
- after_memberelem = newp;
- member = NULL;
- }
-
- ENTRY entry;
- entry.key = arhdr->ar_name;
- ENTRY *res = hsearch (entry, FIND);
- if (res != NULL && found[(char **) res->data - argv] == NULL)
- {
- found[(char **) res->data - argv] = newp;
-
- /* If we insert before or after a certain element move
- all files to a special list. */
- if (unlikely (ipos != ipos_none || oper == oper_move))
- {
- if (after_memberelem == newp)
- /* Since we remove this element even though we should
- insert everything after it, we in fact insert
- everything after the previous element. */
- after_memberelem = all;
-
- goto next;
- }
- }
- }
-
- if (all == NULL)
- all = newp->next = newp;
- else
- {
- newp->next = all->next;
- all = all->next = newp;
- }
-
- next:
- cmd = elf_next (subelf);
- if (elf_end (subelf) != 0)
- error (EXIT_FAILURE, 0, "%s: %s", arfname, elf_errmsg (-1));
- }
-
- if (oper != oper_qappend)
- hdestroy ();
-
- no_old:
- if (member != NULL)
- error (EXIT_FAILURE, 0, gettext ("position member %s not found"),
- member);
-
- if (oper == oper_move)
- {
- /* Make sure all requested elements are found in the archive. */
- for (int cnt = 0; cnt < argc; ++cnt)
- {
- if (found[cnt] == NULL)
- {
- fprintf (stderr, gettext ("%s: no entry %s in archive!\n"),
- program_invocation_short_name, argv[cnt]);
- status = 1;
- }
-
- if (verbose)
- printf ("m - %s\n", argv[cnt]);
- }
- }
- else
- {
- /* Open all the new files, get their sizes and add all symbols. */
- for (int cnt = 0; cnt < argc; ++cnt)
- {
- const char *bname = basename (argv[cnt]);
- size_t bnamelen = strlen (bname);
- if (found[cnt] == NULL)
- {
- found[cnt] = alloca (sizeof (struct armem));
- found[cnt]->old_off = -1;
-
- remember_long_name (found[cnt], bname, bnamelen);
- }
-
- struct stat newst;
- Elf *newelf;
- int newfd = open (argv[cnt], O_RDONLY);
- if (newfd == -1)
- {
- error (0, errno, gettext ("cannot open %s"), argv[cnt]);
- status = 1;
- }
- else if (fstat (newfd, &newst) == -1)
- {
- error (0, errno, gettext ("cannot stat %s"), argv[cnt]);
- close (newfd);
- status = 1;
- }
- else if (!S_ISREG (newst.st_mode))
- {
- error (0, errno, gettext ("%s is no regular file"), argv[cnt]);
- close (newfd);
- status = 1;
- }
- else if (update_newer
- && found[cnt]->old_off != -1l
- && found[cnt]->sec > st.st_mtime)
- /* Do nothing, the file in the archive is younger. */
- close (newfd);
- else if ((newelf = elf_begin (newfd, ELF_C_READ_MMAP, NULL))
- == NULL)
- {
- fprintf (stderr,
- gettext ("cannot get ELF descriptor for %s: %s\n"),
- argv[cnt], elf_errmsg (-1));
- status = 1;
- }
- else
- {
- if (verbose)
- printf ("%c - %s\n",
- found[cnt]->old_off == -1l ? 'a' : 'r', argv[cnt]);
-
- found[cnt]->elf = newelf;
- found[cnt]->sec = arlib_deterministic_output ? 0 : newst.st_mtime;
- found[cnt]->uid = arlib_deterministic_output ? 0 : newst.st_uid;
- found[cnt]->gid = arlib_deterministic_output ? 0 : newst.st_gid;
- found[cnt]->mode = newst.st_mode;
- found[cnt]->name = bname;
-
- found[cnt]->mem = elf_rawfile (newelf, &found[cnt]->size);
- if (found[cnt]->mem == NULL
- || elf_cntl (newelf, ELF_C_FDDONE) != 0)
- error (EXIT_FAILURE, 0, gettext ("cannot read %s: %s"),
- argv[cnt], elf_errmsg (-1));
-
- close (newfd);
-
- if (found[cnt]->old_off != -1l)
- /* Remember long file names. */
- remember_long_name (found[cnt], bname, bnamelen);
- }
- }
- }
-
- if (status != 0)
- {
- elf_end (elf);
-
- arlib_fini ();
-
- close (fd);
-
- return status;
- }
-
- /* If we have no entry point so far add at the end. AFTER_MEMBERELEM
- being NULL when adding before an entry means add at the beginning. */
- if (ipos != ipos_before && after_memberelem == NULL)
- after_memberelem = all;
-
- /* Convert the circular list into a normal list first. */
- if (all != NULL)
- {
- struct armem *tmp = all;
- all = all->next;
- tmp->next = NULL;
- }
-
- struct armem *last_added = after_memberelem;
- for (int cnt = 0; cnt < argc; ++cnt)
- if (oper != oper_replace || found[cnt]->old_off == -1)
- {
- if (last_added == NULL)
- {
- found[cnt]->next = all;
- last_added = all = found[cnt];
- }
- else
- {
- found[cnt]->next = last_added->next;
- last_added = last_added->next = found[cnt];
- }
- }
-
- /* Finally compute the offset and add the symbols for the files
- after the insert point. */
- if (likely (all != NULL))
- for (struct armem *memp = all; memp != NULL; memp = memp->next)
- {
- memp->off = cur_off;
-
- if (memp->mem == NULL)
- {
- Elf_Arhdr *arhdr;
- /* Fake initializing arhdr and subelf to keep gcc calm. */
- asm ("" : "=m" (arhdr), "=m" (subelf));
- if (elf_rand (elf, memp->old_off) == 0
- || (subelf = elf_begin (fd, ELF_C_READ_MMAP, elf)) == NULL
- || (arhdr = elf_getarhdr (subelf)) == NULL)
- /* This should never happen since we already looked at the
- archive content. But who knows... */
- error (EXIT_FAILURE, 0, "%s: %s", arfname, elf_errmsg (-1));
-
- arlib_add_symbols (subelf, arfname, arhdr->ar_name, cur_off);
-
- elf_end (subelf);
- }
- else
- arlib_add_symbols (memp->elf, arfname, memp->name, cur_off);
-
- cur_off += (((memp->size + 1) & ~((off_t) 1))
- + sizeof (struct ar_hdr));
- }
-
- /* Now we have all the information for the symbol table and long
- file name table. Construct the final layout. */
- arlib_finalize ();
-
- /* Create a new, temporary file in the same directory as the
- original file. */
- char tmpfname[strlen (arfname) + 7];
- strcpy (stpcpy (tmpfname, arfname), "XXXXXX");
- int newfd;
- if (fd != -1)
- newfd = mkstemp (tmpfname);
- else
- {
- newfd = open (arfname, O_RDWR | O_CREAT | O_EXCL, DEFFILEMODE);
- if (newfd == -1 && errno == EEXIST)
- /* Bah, first the file did not exist, now it does. Restart. */
- return do_oper_insert (oper, arfname, argv, argc, member);
- }
- if (unlikely (newfd == -1))
- goto nonew;
-
- /* Create the header. */
- if (unlikely (write_retry (newfd, ARMAG, SARMAG) != SARMAG))
- {
- nonew_unlink:
- if (fd != -1)
- {
- // XXX Use /prof/self/fd/%d ???
- unlink (tmpfname);
- if (newfd != -1)
- close (newfd);
- }
- nonew:
- error (0, errno, gettext ("cannot create new file"));
- status = 1;
- goto errout;
- }
-
- /* If the new archive is not empty we actually have something to do. */
- if (likely (all != NULL))
- {
- /* Write the symbol table or the long file name table or both. */
- if (symtab.symsnamelen != 0
- && ((write_retry (newfd, symtab.symsoff, symtab.symsofflen)
- != (ssize_t) symtab.symsofflen)
- || (write_retry (newfd, symtab.symsname, symtab.symsnamelen)
- != (ssize_t) symtab.symsnamelen)))
- goto nonew_unlink;
-
- if (symtab.longnameslen > sizeof (struct ar_hdr)
- && (write_retry (newfd, symtab.longnames, symtab.longnameslen)
- != (ssize_t) symtab.longnameslen))
- goto nonew_unlink;
-
- off_t start = -1;
- off_t len = -1;
-
- while (all != NULL)
- {
- if (all->mem != NULL)
- {
- /* This is a new file. If there is anything from the
- archive left to be written do it now. */
- if (start != -1 && copy_content (elf, newfd, start, len))
- goto nonew_unlink;
-
- start = -1;
- len = -1;
-
- /* Create the header. */
- struct ar_hdr arhdr;
- /* The ar_name is not actually zero teminated, but we
- need that for snprintf. Also if the name is too
- long, then the string starts with '/' plus an index
- off number (decimal). */
- char tmpbuf[sizeof (arhdr.ar_name) + 2];
- if (all->long_name_off == -1)
- {
- size_t namelen = strlen (all->name);
- char *p = mempcpy (arhdr.ar_name, all->name, namelen);
- *p++ = '/';
- memset (p, ' ', sizeof (arhdr.ar_name) - namelen - 1);
- }
- else
- {
- snprintf (tmpbuf, sizeof (tmpbuf), "/%-*ld",
- (int) sizeof (arhdr.ar_name), all->long_name_off);
- memcpy (arhdr.ar_name, tmpbuf, sizeof (arhdr.ar_name));
- }
-
- if (! no0print (false, arhdr.ar_date, sizeof (arhdr.ar_date),
- all->sec))
- {
- error (0, errno, gettext ("cannot represent ar_date"));
- goto nonew_unlink;
- }
- if (! no0print (false, arhdr.ar_uid, sizeof (arhdr.ar_uid),
- all->uid))
- {
- error (0, errno, gettext ("cannot represent ar_uid"));
- goto nonew_unlink;
- }
- if (! no0print (false, arhdr.ar_gid, sizeof (arhdr.ar_gid),
- all->gid))
- {
- error (0, errno, gettext ("cannot represent ar_gid"));
- goto nonew_unlink;
- }
- if (! no0print (true, arhdr.ar_mode, sizeof (arhdr.ar_mode),
- all->mode))
- {
- error (0, errno, gettext ("cannot represent ar_mode"));
- goto nonew_unlink;
- }
- if (! no0print (false, arhdr.ar_size, sizeof (arhdr.ar_size),
- all->size))
- {
- error (0, errno, gettext ("cannot represent ar_size"));
- goto nonew_unlink;
- }
- memcpy (arhdr.ar_fmag, ARFMAG, sizeof (arhdr.ar_fmag));
-
- if (unlikely (write_retry (newfd, &arhdr, sizeof (arhdr))
- != sizeof (arhdr)))
- goto nonew_unlink;
-
- /* Now the file itself. */
- if (unlikely (write_retry (newfd, all->mem, all->size)
- != (off_t) all->size))
- goto nonew_unlink;
-
- /* Pad the file if its size is odd. */
- if ((all->size & 1) != 0)
- if (unlikely (write_retry (newfd, "\n", 1) != 1))
- goto nonew_unlink;
- }
- else
- {
- /* This is a member from the archive. */
- if (write_member (all, &start, &len, elf, cur_off, newfd)
- != 0)
- goto nonew_unlink;
- }
-
- all = all->next;
- }
-
- /* Write the last part. */
- if (start != -1 && copy_content (elf, newfd, start, len))
- goto nonew_unlink;
- }
-
- /* Set the mode of the new file to the same values the original file
- has. */
- if (fd != -1
- && (fchmod (newfd, st.st_mode & ALLPERMS) != 0
- /* Never complain about fchown failing. */
- || (({asm ("" :: "r" (fchown (newfd, st.st_uid, st.st_gid))); }),
- close (newfd) != 0)
- || (newfd = -1, rename (tmpfname, arfname) != 0)))
- goto nonew_unlink;
-
- errout:
- for (int cnt = 0; cnt < argc; ++cnt)
- elf_end (found[cnt]->elf);
-
- elf_end (elf);
-
- arlib_fini ();
-
- if (fd != -1)
- close (fd);
-
- return status;
-}
-
-
-#include "debugpred.h"
+int main() { return 0; }
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