8b5e1e8d30
Fri Apr 05 2002 Bernhard Rosenkraenzer <bero@redhat.com> 2.05a-12 - Fix the fix for #62418 Thu Apr 04 2002 Bernhard Rosenkraenzer <bero@redhat.com> 2.05a-11 - Fix kill builtin (#62418) Mon Mar 25 2002 Trond Eivind Glomsrød <teg@redhat.com> 2.0.5a-10 - Get rid of completion subpackage - Use %{_tmppath} Mon Mar 11 2002 Bernhard Rosenkraenzer <bero@redhat.com> 2.05a-9 - Add patch from Ulrich Drepper to get better error messages when trying to launch an application with a bad ELF interpreter (e.g. libc5 ld.so) (#60870) Fri Feb 22 2002 Bernhard Rosenkraenzer <bero@redhat.com> 2.05a-8 - Update completion
224 lines
6.2 KiB
Diff
224 lines
6.2 KiB
Diff
--- bash-2.05a/config.h.in Mon Oct 22 06:58:13 2001
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+++ bash-2.05a-ud/config.h.in Thu Mar 7 17:33:03 2002
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@@ -541,6 +541,9 @@
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/* Define if you have the pathconf function. */
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#undef HAVE_PATHCONF
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+/* Define if you have the pread function. */
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+#undef HAVE_PREAD
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+
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/* Define if you have the putenv function. */
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#undef HAVE_PUTENV
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@@ -675,6 +678,9 @@
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/* Define if you have the <dlfcn.h> header file. */
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#undef HAVE_DLFCN_H
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+/* Define if you have the <elf.h> header file. */
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+#undef HAVE_ELF_H
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+
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/* Define if you have the <grp.h> header file. */
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#undef HAVE_GRP_H
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--- bash-2.05a/configure.in Mon Nov 5 12:45:35 2001
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+++ bash-2.05a-ud/configure.in Thu Mar 7 17:28:32 2002
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@@ -484,7 +484,7 @@ BASH_HEADER_INTTYPES
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AC_CHECK_HEADERS(unistd.h stdlib.h stdarg.h varargs.h limits.h string.h \
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memory.h locale.h termcap.h termio.h termios.h dlfcn.h \
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- stddef.h stdint.h netdb.h grp.h strings.h)
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+ stddef.h stdint.h netdb.h grp.h strings.h elf.h)
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AC_CHECK_HEADERS(sys/ptem.h sys/pte.h sys/stream.h sys/select.h sys/file.h \
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sys/resource.h sys/param.h sys/socket.h \
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sys/time.h sys/times.h sys/wait.h)
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@@ -546,7 +546,7 @@ AC_CHECK_FUNCS(bcopy bzero confstr sysco
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setlinebuf setvbuf setlocale strchr tcgetattr uname \
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ulimit tzset siginterrupt memmove ttyname times \
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getaddrinfo gethostbyname getservbyname inet_aton \
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- vsnprintf snprintf vasprintf asprintf fnmatch)
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+ vsnprintf snprintf vasprintf asprintf fnmatch pread)
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AC_CHECK_FUNCS(isascii isblank isgraph isprint isspace isxdigit)
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AC_REPLACE_FUNCS(getcwd strcasecmp strerror strpbrk strtod)
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AC_REPLACE_FUNCS(strtol strtoul strtoll strtoull strtoimax strtoumax)
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--- bash-2.05a/execute_cmd.c Mon Oct 29 11:03:18 2001
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+++ bash-2.05a-ud/execute_cmd.c Fri Mar 8 00:50:53 2002
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@@ -1,6 +1,6 @@
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/* execute_command.c -- Execute a COMMAND structure. */
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-/* Copyright (C) 1987,1991 Free Software Foundation, Inc.
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+/* Copyright (C) 1987,1991, 2002 Free Software Foundation, Inc.
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This file is part of GNU Bash, the Bourne Again SHell.
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@@ -40,6 +40,10 @@
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# include <unistd.h>
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#endif
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+#ifdef HAVE_ELF_H
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+# include <elf.h>
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+#endif
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+
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#include "posixtime.h"
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#if defined (HAVE_SYS_RESOURCE_H) && !defined (RLIMTYPE)
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@@ -3499,12 +3503,21 @@ shell_execve (command, args, env)
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internal_error ("%s: is a directory", command);
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else
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{
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+#if defined (HAVE_HASH_BANG_EXEC) || defined (HAVE_ELF_H)
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+ int fd = open (command, O_RDONLY);
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+
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+ if (fd >= 0)
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+ sample_len = read (fd, sample, sizeof (sample));
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+ else
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+ sample_len = -1;
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+#endif
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+
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#if defined (HAVE_HASH_BANG_EXEC)
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- READ_SAMPLE_BUF (command, sample, sample_len);
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if (sample_len > 2 && sample[0] == '#' && sample[1] == '!')
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{
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char *interp;
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+ close (fd);
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interp = getinterp (sample, sample_len, (int *)NULL);
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errno = i;
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sys_error ("%s: %s: bad interpreter", command, interp ? interp : "");
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@@ -3512,6 +3525,136 @@ shell_execve (command, args, env)
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return (EX_NOEXEC);
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}
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#endif
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+#if defined (HAVE_ELF_H)
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+ if (i == ENOENT
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+ && sample_len > EI_NIDENT
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+ && memcmp (sample, ELFMAG, SELFMAG) == 0)
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+ {
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+ off_t offset = -1;
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+
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+ /* It is an ELF file. Now determine whether it is dynamically
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+ linked and if yes, get the offset of the interpreter
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+ string. */
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+ if (sample[EI_CLASS] == ELFCLASS32
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+ && sample_len > sizeof (Elf32_Ehdr))
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+ {
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+ Elf32_Ehdr ehdr;
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+ Elf32_Phdr *phdr;
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+ int nphdr;
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+
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+ /* We have to copy the data since the sample buffer
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+ might not be aligned correctly to be accessed as
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+ an Elf32_Ehdr struct. */
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+ memcpy (&ehdr, sample, sizeof (Elf32_Ehdr));
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+
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+ nphdr = ehdr.e_phnum;
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+ phdr = (Elf32_Phdr *) malloc (nphdr * ehdr.e_phentsize);
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+ if (phdr != NULL)
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+ {
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+#ifdef HAVE_PREAD
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+ sample_len = pread (fd, phdr, nphdr * ehdr.e_phentsize,
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+ ehdr.e_phoff);
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+#else
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+ if (lseek (fd, ehdr.e_phoff, SEEK_SET) != -1)
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+ sample_len = read (fd, phdr,
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+ nphdr * ehdr.e_phentsize);
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+ else
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+ sample_len = -1;
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+#endif
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+ if (sample_len == nphdr * ehdr.e_phentsize)
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+ while (nphdr-- > 0)
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+ if (phdr[nphdr].p_type == PT_INTERP)
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+ {
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+ offset = phdr[nphdr].p_offset;
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+ break;
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+ }
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+ free (phdr);
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+ }
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+ }
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+ else if (sample[EI_CLASS] == ELFCLASS64
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+ && sample_len > sizeof (Elf64_Ehdr))
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+ {
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+ Elf64_Ehdr ehdr;
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+ Elf64_Phdr *phdr;
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+ int nphdr;
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+
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+ /* We have to copy the data since the sample buffer
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+ might not be aligned correctly to be accessed as
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+ an Elf64_Ehdr struct. */
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+ memcpy (&ehdr, sample, sizeof (Elf64_Ehdr));
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+
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+ nphdr = ehdr.e_phnum;
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+ phdr = (Elf64_Phdr *) malloc (nphdr * ehdr.e_phentsize);
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+ if (phdr != NULL)
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+ {
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+#ifdef HAVE_PREAD
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+ sample_len = pread (fd, phdr, nphdr * ehdr.e_phentsize,
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+ ehdr.e_phoff);
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+#else
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+ if (lseek (fd, ehdr.e_phoff, SEEK_SET) != -1)
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+ sample_len = read (fd, phdr,
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+ nphdr * ehdr.e_phentsize);
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+ else
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+ sample_len = -1;
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+#endif
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+ if (sample_len == nphdr * ehdr.e_phentsize)
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+ while (nphdr-- > 0)
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+ if (phdr[nphdr].p_type == PT_INTERP)
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+ {
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+ offset = phdr[nphdr].p_offset;
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+ break;
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+ }
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+ free (phdr);
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+ }
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+ }
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+
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+ if (offset != -1)
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+ {
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+ size_t maxlen = 0;
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+ size_t actlen = 0;
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+ char *interp = NULL;
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+
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+ do
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+ {
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+ if (actlen == maxlen)
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+ {
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+ char *newinterp = realloc (interp, maxlen += 200);
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+ if (newinterp == NULL)
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+ {
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+ actlen = 0;
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+ break;
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+ }
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+ interp = newinterp;
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+
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+#ifdef HAVE_PREAD
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+ actlen = pread (fd, interp, maxlen, offset);
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+#else
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+ if (lseek (fd, offset, SEEK_SET) != -1)
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+ actlen = read (fd, interp, maxlen);
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+ else
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+ actlen = -1;
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+#endif
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+ }
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+ }
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+ while (actlen > 0 && memchr (interp, '\0', actlen) == NULL);
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+
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+ if (actlen > 0)
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+ {
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+ close (fd);
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+ errno = i;
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+ sys_error ("%s: %s: bad ELF interpreter", command,
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+ interp);
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+ free (interp);
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+ return (EX_NOEXEC);
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+ }
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+
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+ free (interp);
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+ }
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+ }
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+#endif
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+#if defined (HAVE_HASH_BANG_EXEC) || defined (HAVE_ELF_H)
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+ close (fd);
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+#endif
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errno = i;
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file_error (command);
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}
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