diff options
Diffstat (limited to 'sysdeps')
| -rw-r--r-- | sysdeps/generic/register-dump.h | 21 | ||||
| -rw-r--r-- | sysdeps/generic/segfault.c | 55 | ||||
| -rw-r--r-- | sysdeps/i386/register-dump.h | 256 | ||||
| -rw-r--r-- | sysdeps/powerpc/register-dump.h | 73 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/i386/profil-counter.h | 5 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/ldd-rewrite.sed | 2 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/powerpc/chown.c | 131 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/powerpc/clone.S | 78 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/powerpc/lchown.S | 35 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/powerpc/profil-counter.h | 36 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/powerpc/sigcontextinfo.h | 24 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/powerpc/syscalls.list | 4 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/sys/mount.h | 6 |
13 files changed, 642 insertions, 84 deletions
diff --git a/sysdeps/generic/register-dump.h b/sysdeps/generic/register-dump.h new file mode 100644 index 0000000000..42c222c2ed --- /dev/null +++ b/sysdeps/generic/register-dump.h @@ -0,0 +1,21 @@ +/* Dump registers. + Copyright (C) 1998 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 of the + License, or (at your option) any later version. + + The GNU C Library 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +/* In general we cannot do anything. */ diff --git a/sysdeps/generic/segfault.c b/sysdeps/generic/segfault.c index 6504123e18..090f91a657 100644 --- a/sysdeps/generic/segfault.c +++ b/sysdeps/generic/segfault.c @@ -18,16 +18,21 @@ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ +#include <ctype.h> #include <execinfo.h> #include <fcntl.h> #include <signal.h> #include <stdlib.h> +#include <string.h> #include <unistd.h> /* This file defines macros to access the content of the sigcontext element passed up by the signal handler. */ #include <sigcontextinfo.h> +/* Get code to possibly dump the content of all registers. */ +#include <register-dump.h> + /* This is a global variable set at program start time. It marks the highest used stack address. */ extern void *__libc_stack_end; @@ -76,6 +81,8 @@ catch_segfault (int signal, SIGCONTEXT ctx) int fd; void **arr; size_t cnt; + struct sigaction sa; + const char *sigstring; /* This is the name of the file we are writing to. If none is given or we cannot write to this file write to stderr. */ @@ -88,9 +95,17 @@ catch_segfault (int signal, SIGCONTEXT ctx) fd = 2; } -#define WRITE_STRING(s) write (fd, s, sizeof (s) - 1) - WRITE_STRING ("*** Segmentation Fault\n"); - WRITE_STRING ("Backtrace:\n"); +#define WRITE_STRING(s) write (fd, s, strlen (s)) + WRITE_STRING ("*** "); + sigstring = strsignal (signal); + WRITE_STRING (sigstring); + WRITE_STRING ("\n"); + +#ifdef REGISTER_DUMP + REGISTER_DUMP; +#endif + + WRITE_STRING ("\nBacktrace:\n"); top_frame = GET_FRAME (ctx); top_stack = GET_STACK (ctx); @@ -124,8 +139,12 @@ catch_segfault (int signal, SIGCONTEXT ctx) /* Now generate nicely formatted output. */ __backtrace_symbols_fd (arr, cnt, fd); - /* Nothing else to do. */ - _exit (128 + SIGSEGV); + /* Pass on the signal (so that a core file is produced). */ + sa.sa_handler = SIG_DFL; + sigemptyset (&sa.sa_mask); + sa.sa_flags = 0; + sigaction (signal, &sa, NULL); + raise (signal); } @@ -134,12 +153,36 @@ __attribute__ ((constructor)) install_handler (void) { struct sigaction sa; + const char *sigs = getenv ("SEGFAULT_SIGNALS"); sa.sa_handler = (void *) catch_segfault; sigemptyset (&sa.sa_mask); sa.sa_flags = SA_RESTART; - sigaction (SIGSEGV, &sa, NULL); + if (sigs == NULL) + sigaction (SIGSEGV, &sa, NULL); + else if (sigs[0] == '\0') + /* Do not do anything. */ + return; + else + { + const char *where; + int all = __strcasecmp (sigs, "all"); + +#define INSTALL_FOR_SIG(sig, name) \ + where = __strcasestr (sigs, name); \ + if (all || (where != NULL \ + && (where == sigs || !isalnum (where[-1])) \ + && !isalnum (where[sizeof (name) - 1]))) \ + sigaction (sig, &sa, NULL); + + INSTALL_FOR_SIG (SIGSEGV, "segv"); + INSTALL_FOR_SIG (SIGILL, "ill"); + INSTALL_FOR_SIG (SIGBUS, "bus"); + INSTALL_FOR_SIG (SIGSTKFLT, "stkflt"); + INSTALL_FOR_SIG (SIGABRT, "abrt"); + INSTALL_FOR_SIG (SIGFPE, "fpe"); + } /* Maybe we are expected to use an alternative stack. */ if (getenv ("SEGFAULT_USE_ALTSTACK") != 0) diff --git a/sysdeps/i386/register-dump.h b/sysdeps/i386/register-dump.h new file mode 100644 index 0000000000..34501fe1be --- /dev/null +++ b/sysdeps/i386/register-dump.h @@ -0,0 +1,256 @@ +/* Dump registers. + Copyright (C) 1998 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 of the + License, or (at your option) any later version. + + The GNU C Library 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include <sys/uio.h> +#include <stdio-common/_itoa.h> + +/* We will print the register dump in this format: + + EAX: XXXXXXXX EBX: XXXXXXXX ECX: XXXXXXXX EDX: XXXXXXXX + ESI: XXXXXXXX EDI: XXXXXXXX EBP: XXXXXXXX ESP: XXXXXXXX + + EIP: XXXXXXXX EFLAGS: XXXXXXXX + + CS: XXXX DS: XXXX ES: XXXX FS: XXXX GS: XXXX SS: XXXX + + Trap: XXXXXXXX Error: XXXXXXXX OldMask: XXXXXXXX + ESP/SIGNAL: XXXXXXXX CR2: XXXXXXXX + + FPUCW: XXXXXXXX FPUSW: XXXXXXXX TAG: XXXXXXXX + IPOFF: XXXXXXXX CSSEL: XXXX DATAOFF: XXXXXXXX DATASEL: XXXX + + ST(0) XXXX XXXXXXXXXXXXXXXX ST(1) XXXX XXXXXXXXXXXXXXXX + ST(2) XXXX XXXXXXXXXXXXXXXX ST(3) XXXX XXXXXXXXXXXXXXXX + ST(4) XXXX XXXXXXXXXXXXXXXX ST(5) XXXX XXXXXXXXXXXXXXXX + ST(6) XXXX XXXXXXXXXXXXXXXX ST(7) XXXX XXXXXXXXXXXXXXXX + + */ + +static void +hexvalue (unsigned long int value, char *buf, size_t len) +{ + char *cp = _itoa_word (value, buf + len, 16, 0); + while (cp > buf) + *--cp = '0'; +} + +static void +register_dump (int fd, struct sigcontext *ctx) +{ + char regs[21][8]; + char fpregs[31][8]; + struct iovec iov[97]; + size_t nr = 0; + +#define ADD_STRING(str) \ + iov[nr].iov_base = (char *) str; \ + iov[nr].iov_len = strlen (str); \ + ++nr +#define ADD_MEM(str, len) \ + iov[nr].iov_base = str; \ + iov[nr].iov_len = len; \ + ++nr + + /* Generate strings of register contents. */ + hexvalue (ctx->eax, regs[0], 8); + hexvalue (ctx->ebx, regs[1], 8); + hexvalue (ctx->ecx, regs[2], 8); + hexvalue (ctx->edx, regs[3], 8); + hexvalue (ctx->esi, regs[4], 8); + hexvalue (ctx->edi, regs[5], 8); + hexvalue (ctx->ebp, regs[6], 8); + hexvalue (ctx->esp, regs[7], 8); + hexvalue (ctx->eip, regs[8], 8); + hexvalue (ctx->eflags, regs[9], 8); + hexvalue (ctx->cs, regs[10], 4); + hexvalue (ctx->ds, regs[11], 4); + hexvalue (ctx->es, regs[12], 4); + hexvalue (ctx->fs, regs[13], 4); + hexvalue (ctx->gs, regs[14], 4); + hexvalue (ctx->ss, regs[15], 4); + hexvalue (ctx->trapno, regs[16], 8); + hexvalue (ctx->err, regs[17], 8); + hexvalue (ctx->oldmask, regs[18], 8); + hexvalue (ctx->esp_at_signal, regs[19], 8); + hexvalue (ctx->cr2, regs[20], 8); + + /* Generate the output. */ + ADD_STRING ("Register dump:\n\n EAX: "); + ADD_MEM (regs[0], 8); + ADD_STRING (" EBX: "); + ADD_MEM (regs[1], 8); + ADD_STRING (" ECX: "); + ADD_MEM (regs[2], 8); + ADD_STRING (" EDX: "); + ADD_MEM (regs[3], 8); + ADD_STRING ("\n ESI: "); + ADD_MEM (regs[4], 8); + ADD_STRING (" EDI: "); + ADD_MEM (regs[5], 8); + ADD_STRING (" EBP: "); + ADD_MEM (regs[6], 8); + ADD_STRING (" ESP: "); + ADD_MEM (regs[7], 8); + ADD_STRING ("\n\n EIP: "); + ADD_MEM (regs[8], 8); + ADD_STRING (" EFLAGS: "); + ADD_MEM (regs[9], 8); + ADD_STRING ("\n\n CS: "); + ADD_MEM (regs[10], 4); + ADD_STRING (" DS: "); + ADD_MEM (regs[11], 4); + ADD_STRING (" ES: "); + ADD_MEM (regs[12], 4); + ADD_STRING (" FS: "); + ADD_MEM (regs[13], 4); + ADD_STRING (" GS: "); + ADD_MEM (regs[14], 4); + ADD_STRING (" SS: "); + ADD_MEM (regs[15], 4); + ADD_STRING ("\n\n Trap: "); + ADD_MEM (regs[16], 8); + ADD_STRING (" Error: "); + ADD_MEM (regs[17], 8); + ADD_STRING (" OldMask: "); + ADD_MEM (regs[18], 8); + ADD_STRING ("\n ESP/signal: "); + ADD_MEM (regs[19], 8); + ADD_STRING (" CR2: "); + ADD_MEM (regs[20], 8); + + if (ctx->fpstate != NULL) + { + + /* Generate output for the FPU control/status registers. */ + hexvalue (ctx->fpstate->cw, fpregs[0], 8); + hexvalue (ctx->fpstate->sw, fpregs[1], 8); + hexvalue (ctx->fpstate->tag, fpregs[2], 8); + hexvalue (ctx->fpstate->ipoff, fpregs[3], 8); + hexvalue (ctx->fpstate->cssel, fpregs[4], 4); + hexvalue (ctx->fpstate->dataoff, fpregs[5], 8); + hexvalue (ctx->fpstate->datasel, fpregs[6], 4); + + ADD_STRING ("\n\n FPUCW: "); + ADD_MEM (fpregs[0], 8); + ADD_STRING (" FPUSW: "); + ADD_MEM (fpregs[1], 8); + ADD_STRING (" TAG: "); + ADD_MEM (fpregs[2], 8); + ADD_STRING ("\n IPOFF: "); + ADD_MEM (fpregs[3], 8); + ADD_STRING (" CSSEL: "); + ADD_MEM (fpregs[4], 4); + ADD_STRING (" DATAOFF: "); + ADD_MEM (fpregs[5], 8); + ADD_STRING (" DATASEL: "); + ADD_MEM (fpregs[6], 4); + + /* Now the real FPU registers. */ + hexvalue (ctx->fpstate->_st[0].exponent, fpregs[7], 8); + hexvalue (ctx->fpstate->_st[0].significand[3] << 16 + | ctx->fpstate->_st[0].significand[2], fpregs[8], 8); + hexvalue (ctx->fpstate->_st[0].significand[1] << 16 + | ctx->fpstate->_st[0].significand[0], fpregs[9], 8); + hexvalue (ctx->fpstate->_st[1].exponent, fpregs[10], 8); + hexvalue (ctx->fpstate->_st[1].significand[3] << 16 + | ctx->fpstate->_st[1].significand[2], fpregs[11], 8); + hexvalue (ctx->fpstate->_st[1].significand[1] << 16 + | ctx->fpstate->_st[1].significand[0], fpregs[12], 8); + hexvalue (ctx->fpstate->_st[2].exponent, fpregs[13], 8); + hexvalue (ctx->fpstate->_st[2].significand[3] << 16 + | ctx->fpstate->_st[2].significand[2], fpregs[14], 8); + hexvalue (ctx->fpstate->_st[2].significand[1] << 16 + | ctx->fpstate->_st[2].significand[0], fpregs[15], 8); + hexvalue (ctx->fpstate->_st[3].exponent, fpregs[16], 8); + hexvalue (ctx->fpstate->_st[3].significand[3] << 16 + | ctx->fpstate->_st[3].significand[2], fpregs[17], 8); + hexvalue (ctx->fpstate->_st[3].significand[1] << 16 + | ctx->fpstate->_st[3].significand[0], fpregs[18], 8); + hexvalue (ctx->fpstate->_st[4].exponent, fpregs[19], 8); + hexvalue (ctx->fpstate->_st[4].significand[3] << 16 + | ctx->fpstate->_st[4].significand[2], fpregs[20], 8); + hexvalue (ctx->fpstate->_st[4].significand[1] << 16 + | ctx->fpstate->_st[4].significand[0], fpregs[21], 8); + hexvalue (ctx->fpstate->_st[5].exponent, fpregs[22], 8); + hexvalue (ctx->fpstate->_st[5].significand[3] << 16 + | ctx->fpstate->_st[5].significand[2], fpregs[23], 8); + hexvalue (ctx->fpstate->_st[5].significand[1] << 16 + | ctx->fpstate->_st[5].significand[0], fpregs[24], 8); + hexvalue (ctx->fpstate->_st[6].exponent, fpregs[25], 8); + hexvalue (ctx->fpstate->_st[6].significand[3] << 16 + | ctx->fpstate->_st[6].significand[2], fpregs[26], 8); + hexvalue (ctx->fpstate->_st[6].significand[1] << 16 + | ctx->fpstate->_st[6].significand[0], fpregs[27], 8); + hexvalue (ctx->fpstate->_st[7].exponent, fpregs[28], 8); + hexvalue (ctx->fpstate->_st[7].significand[3] << 16 + | ctx->fpstate->_st[7].significand[2], fpregs[29], 8); + hexvalue (ctx->fpstate->_st[7].significand[1] << 16 + | ctx->fpstate->_st[7].significand[0], fpregs[30], 8); + + ADD_STRING ("\n\n ST(0) "); + ADD_MEM (fpregs[7], 4); + ADD_STRING (" "); + ADD_MEM (fpregs[8], 8); + ADD_MEM (fpregs[9], 8); + ADD_STRING (" ST(1) "); + ADD_MEM (fpregs[10], 4); + ADD_STRING (" "); + ADD_MEM (fpregs[11], 8); + ADD_MEM (fpregs[12], 8); + ADD_STRING ("\n ST(2) "); + ADD_MEM (fpregs[13], 4); + ADD_STRING (" "); + ADD_MEM (fpregs[14], 8); + ADD_MEM (fpregs[15], 8); + ADD_STRING (" ST(3) "); + ADD_MEM (fpregs[16], 4); + ADD_STRING (" "); + ADD_MEM (fpregs[17], 8); + ADD_MEM (fpregs[18], 8); + ADD_STRING ("\n ST(4) "); + ADD_MEM (fpregs[19], 4); + ADD_STRING (" "); + ADD_MEM (fpregs[20], 8); + ADD_MEM (fpregs[21], 8); + ADD_STRING (" ST(5) "); + ADD_MEM (fpregs[22], 4); + ADD_STRING (" "); + ADD_MEM (fpregs[23], 8); + ADD_MEM (fpregs[24], 8); + ADD_STRING ("\n ST(6) "); + ADD_MEM (fpregs[25], 4); + ADD_STRING (" "); + ADD_MEM (fpregs[26], 8); + ADD_MEM (fpregs[27], 8); + ADD_STRING (" ST(7) "); + ADD_MEM (fpregs[28], 4); + ADD_STRING (" "); + ADD_MEM (fpregs[29], 8); + ADD_MEM (fpregs[30], 8); + } + + ADD_STRING ("\n"); + + /* Write the stuff out. */ + writev (fd, iov, nr); +} + + +#define REGISTER_DUMP register_dump (fd, &ctx) diff --git a/sysdeps/powerpc/register-dump.h b/sysdeps/powerpc/register-dump.h new file mode 100644 index 0000000000..428b6073b9 --- /dev/null +++ b/sysdeps/powerpc/register-dump.h @@ -0,0 +1,73 @@ +/* Dump registers. + Copyright (C) 1998 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 of the + License, or (at your option) any later version. + + The GNU C Library 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include <sys/uio.h> +#include <stdio-common/_itoa.h> + +static const char *regnames[] = +{ + "\nr0 =", " sp =", " r2 =", " r3 =", " r4 =", " r5 =", + "\nr6 =", " r7 =", " r8 =", " r9 =", " r10=", " r11=", + "\nr12=", " r13=", " r14=", " r15=", " r16=", " r17=", + "\nr18=", " r19=", " r20=", " r21=", " r22=", " r23=", + "\nr24=", " r25=", " r26=", " r27=", " r28=", " r29=", + "\nr30=", " r31=", " nip=", " msr=", " r3*=", " ctr=", + "\nlr =", " xer=", " ccr=", " mq =", " trap=", + "\naddress of fault=", " dsisr=", +}; + +static void +register_dump (int fd, void **ctx) +{ + char buffer[(sizeof (regnames) / sizeof (regnames[0])) * 8]; + char *bufferpos = buffer + sizeof (buffer); + struct iovec iov[(sizeof (regnames) / sizeof (regnames[0])) * 2 + 1]; + int nr = 0; + +#define ADD_STRING(str) \ + iov[nr].iov_base = (char *) str; \ + iov[nr].iov_len = strlen (str); \ + ++nr +#define ADD_HEX(str, len) \ + do { \ + char *s = _itoa_word ((unsigned long int) x, bufferpos, 16, 0); \ + while (bufferpos - s < 8) \ + *--s = '0'; \ + iov[nr].iov_base = s; \ + iov[nr].iov_len = bufferpos - s; \ + bufferpos = s; \ + } while (0) + + /* Generate the output. */ + ADD_STRING ("Register dump:\n\n"); + for (i = 0; i < sizeof (regnames) / sizeof (regnames[0]); i++) + { + ADD_STRING (regnames[i]); + ADD_HEX (ctx[i]); + } + + /* Write the output. */ + writev (fd, iov, nr); +} + + +#define REGISTER_DUMP \ + ctx += 8; /* FIXME!!!! Why is this necessary? Is it necessary? */ \ + register_dump (fd, ctx) diff --git a/sysdeps/unix/sysv/linux/i386/profil-counter.h b/sysdeps/unix/sysv/linux/i386/profil-counter.h index a24ea19654..50186932be 100644 --- a/sysdeps/unix/sysv/linux/i386/profil-counter.h +++ b/sysdeps/unix/sysv/linux/i386/profil-counter.h @@ -18,9 +18,10 @@ Boston, MA 02111-1307, USA. */ #include <signal.h> +#include <sigcontextinfo.h> static void -profil_counter (int signo, struct sigcontext sc) +profil_counter (int signo, SIGCONTEXT scp) { - profil_count ((void *) sc.eip); + profil_count ((void *) GET_PC (scp)); } diff --git a/sysdeps/unix/sysv/linux/ldd-rewrite.sed b/sysdeps/unix/sysv/linux/ldd-rewrite.sed index 0ad5bc4f93..7b8b6bdee0 100644 --- a/sysdeps/unix/sysv/linux/ldd-rewrite.sed +++ b/sysdeps/unix/sysv/linux/ldd-rewrite.sed @@ -1,7 +1,7 @@ /Maybe extra code for non-ELF binaries/a\ file=$1\ # Run the ldd stub.\ - lddlibc4 $file\ + lddlibc4 "$file"\ # Test the result.\ if test $? -lt 3; then\ return 0;\ diff --git a/sysdeps/unix/sysv/linux/powerpc/chown.c b/sysdeps/unix/sysv/linux/powerpc/chown.c new file mode 100644 index 0000000000..5f6c3d29ce --- /dev/null +++ b/sysdeps/unix/sysv/linux/powerpc/chown.c @@ -0,0 +1,131 @@ +/* chown() compatibility. + Copyright (C) 1998 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 of the + License, or (at your option) any later version. + + The GNU C Library 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include <errno.h> +#include <string.h> +#include <unistd.h> +#include <limits.h> +#include <sys/syscall.h> +#include <stdlib.h> + +/* + In Linux 2.1.x the chown functions have been changed. A new function lchown + was introduced. The new chown now follows symlinks - the old chown and the + new lchown do not follow symlinks. + This file emulates chown() under the old kernels. +*/ + +extern int __syscall_chown (const char *__file, + uid_t __owner, gid_t __group); + +int +__chown (const char *file, uid_t owner, gid_t group) +{ + int err; + int old_errno; + char link[PATH_MAX+2]; + char path[2*PATH_MAX+4]; + int loopct; + int filelen; + static int libc_old_chown = 0 /* -1=old linux, 1=new linux, 0=unknown */; + + if (libc_old_chown == 1) + return __syscall_chown (file, owner, group); + + old_errno = errno; + +#ifdef __NR_lchown + if (libc_old_chown == 0) + { + err = __syscall_chown (file, owner, group); + if (err != -1 || errno != ENOSYS) + { + libc_old_chown = 1; + return err; + } + libc_old_chown = -1; + } +#endif + + err = __readlink (file, link, PATH_MAX+1); + if (err == -1) + { + errno = old_errno; + return __lchown(file, owner, group); + } + + filelen = strlen (file) + 1; + if (filelen > sizeof(path)) + { + errno = ENAMETOOLONG; + return -1; + } + memcpy (path, file, filelen); + + /* 'The system has an arbitrary limit...' In practise, we'll hit + ENAMETOOLONG before this, usually. */ + for (loopct = 0; loopct < 128; loopct++) + { + int linklen; + + if (err >= PATH_MAX+1) + { + errno = ENAMETOOLONG; + return -1; + } + + link[err] = 0; /* Null-terminate string, just-in-case. */ + + linklen = strlen (link) + 1; + + if (link[0] == '/') + memcpy (path, link, linklen); + else + { + filelen = strlen (path); + + while (filelen > 1 && path[filelen-1] == '/') + filelen--; + while (filelen > 0 && path[filelen-1] != '/') + filelen--; + if (filelen + linklen > sizeof(path)) + { + errno = ENAMETOOLONG; + return -1; + } + memcpy (path+filelen, link, linklen); + } + + err = __readlink(path, link, PATH_MAX+1); + + if (err == -1) + { + errno = old_errno; + return __lchown(path, owner, group); + } + } + errno = ELOOP; + return -1; +} + +#if defined PIC && defined DO_VERSIONING +default_symbol_version (__chown, chown, GLIBC_2.1); +#else +weak_alias (__chown, chown) +#endif diff --git a/sysdeps/unix/sysv/linux/powerpc/clone.S b/sysdeps/unix/sysv/linux/powerpc/clone.S index 6209922b6b..69d2c5f586 100644 --- a/sysdeps/unix/sysv/linux/powerpc/clone.S +++ b/sysdeps/unix/sysv/linux/powerpc/clone.S @@ -1,5 +1,5 @@ /* Wrapper around clone system call. - Copyright (C) 1997 Free Software Foundation, Inc. + Copyright (C) 1997, 1998 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -28,56 +28,60 @@ /* int clone(int (*fn)(void *arg), void *child_stack, int flags, void *arg); */ ENTRY(__clone) - /* Set up stack frame, save registers. */ - stwu %r1,-32(%r1) /* Check for child_stack == NULL || fn == NULL. */ - cmpwi %cr0,%r4,0 - stw %r31,16(%r1) - cmpwi %cr1,%r3,0 - stw %r30,20(%r1) - beq- %cr0,badargs - beq- %cr1,badargs + cmpwi %cr0,%r4,0 + cmpwi %cr1,%r3,0 + cror cr0*4+eq,cr1*4+eq,cr0*4+eq + beq- %cr0,L(badargs) + /* Set up stack frame for parent. */ + stwu %r1,-32(%r1) + stmw %r29,16(%r1) + /* Set up stack frame for child. */ - addi %r4,%r4,-16 - clrrwi %r4,%r4,4 - li %r0,0 - stw %r0,0(%r4) + clrrwi %r4,%r4,4 + li %r0,0 + stwu %r0,-16(%r4) - /* Save fn, args across syscall. */ - mr %r30,%r3 /* Function in r30. */ - mr %r31,%r6 /* Arguments in r31. */ + /* Save fn, args, stack across syscall. */ + mr %r29,%r3 /* Function in r29. */ + mr %r30,%r4 /* Stack pointer in r30. */ + mr %r31,%r6 /* Argument in r31. */ /* 'flags' argument is first parameter to clone syscall. (The other argument is the stack pointer, already in r4.) */ - mr %r3,%r5 + mr %r3,%r5 /* Do the call. */ DO_CALL(SYS_ify(clone)) - bso- error - beq child - /* Parent. Restore registers & return. */ - lwz %r31,16(%r1) - lwz %r30,20(%r1) - addi %r1,%r1,32 - blr + /* Check for child process. */ + cmpwi %cr1,%r3,0 + crandc cr1*4+eq,cr1*4+eq,cr0*4+so + bne- %cr1,L(parent) /* The '-' is to minimise the race. */ -child: + /* On at least mklinux DR3a5, clone() doesn't actually change + the stack pointer. I'm pretty sure this is a bug, because + it adds a race condition if a signal is sent to a thread + just after it is created (in the previous three instructions). */ + mr %r1,%r30 /* Call procedure. */ - mtlr %r30 - mr %r3,%r31 - blrl + mtctr %r29 + mr %r3,%r31 + bctrl /* Call _exit with result from procedure. */ - b JUMPTARGET(_exit) - -badargs: - li %r3,EINVAL -error: - lwz %r31,16(%r1) - lwz %r30,20(%r1) - addi %r1,%r1,32 - b JUMPTARGET(__syscall_error) + b JUMPTARGET(_exit) + +L(parent): + /* Parent. Restore registers & return. */ + lmw %r29,16(%r1) + addi %r1,%r1,32 + bnslr+ + b JUMPTARGET(__syscall_error) + +L(badargs): + li %r3,EINVAL + b JUMPTARGET(__syscall_error) END (__clone) weak_alias (__clone, clone) diff --git a/sysdeps/unix/sysv/linux/powerpc/lchown.S b/sysdeps/unix/sysv/linux/powerpc/lchown.S new file mode 100644 index 0000000000..9195eab516 --- /dev/null +++ b/sysdeps/unix/sysv/linux/powerpc/lchown.S @@ -0,0 +1,35 @@ +/* lchown system call. + Copyright (C) 1998 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 of the + License, or (at your option) any later version. + + The GNU C Library 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +/* Some old kernel headers call lchown() 'chown'. The number is + the same. */ + +#include <sysdep.h> + +#ifdef __NR_lchown + PSEUDO (__lchown, lchown, 3) +#else + PSEUDO (__lchown, chown, 3) +#endif + ret + PSEUDO_END(__lchown) + weak_alias (__lchown, lchown) +#if defined PIC && defined DO_VERSIONING + symbol_version (__lchown, chown, GLIBC_2.0); +#endif diff --git a/sysdeps/unix/sysv/linux/powerpc/profil-counter.h b/sysdeps/unix/sysv/linux/powerpc/profil-counter.h index 4be6f11270..8a6a0bcf3d 100644 --- a/sysdeps/unix/sysv/linux/powerpc/profil-counter.h +++ b/sysdeps/unix/sysv/linux/powerpc/profil-counter.h @@ -1,34 +1,2 @@ -/* Low-level statistical profiling support function. Linux/PowerPC version. - Copyright (C) 1996, 1997 Free Software Foundation, Inc. - This file is part of the GNU C Library. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Library General Public License as - published by the Free Software Foundation; either version 2 of the - License, or (at your option) any later version. - - The GNU C Library 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 - Library General Public License for more details. - - You should have received a copy of the GNU Library General Public - License along with the GNU C Library; see the file COPYING.LIB. If not, - write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, - Boston, MA 02111-1307, USA. */ - -#include <sys/ptrace.h> - -/* You can also do this by using - void - profil_counter (int signo, struct pt_regs *pt) - { - profil_count ((void *) pt->nip); - } - */ - -void -profil_counter (int signo, void **regs) -{ - profil_count (regs[PT_NIP]); -} +/* We can use the ix86 version. */ +#include <sysdeps/unix/sysv/linux/i386/profil-counter.h> diff --git a/sysdeps/unix/sysv/linux/powerpc/sigcontextinfo.h b/sysdeps/unix/sysv/linux/powerpc/sigcontextinfo.h new file mode 100644 index 0000000000..2a7a2fe5c8 --- /dev/null +++ b/sysdeps/unix/sysv/linux/powerpc/sigcontextinfo.h @@ -0,0 +1,24 @@ +/* Copyright (C) 1998 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 of the + License, or (at your option) any later version. + + The GNU C Library 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include <sys/ptrace.h> + +#define SIGCONTEXT void ** +#define GET_PC(ctx) ((ctx)[PT_NIP]) +#define GET_FRAME(ctx) (*(void **)(ctx)[PT_R1]) +#define GET_STACK(ctx) ((ctx)[PT_R1]) diff --git a/sysdeps/unix/sysv/linux/powerpc/syscalls.list b/sysdeps/unix/sysv/linux/powerpc/syscalls.list index 605762a2a4..3af0c5b6f8 100644 --- a/sysdeps/unix/sysv/linux/powerpc/syscalls.list +++ b/sysdeps/unix/sysv/linux/powerpc/syscalls.list @@ -1,6 +1,4 @@ # File name Caller Syscall name # args Strong name Weak names s_llseek llseek _llseek 5 __sys_llseek - -getresuid - getresuid 3 getresuid -getresgid - getresgid 3 getresgid +s_chown chown chown 3 __syscall_chown diff --git a/sysdeps/unix/sysv/linux/sys/mount.h b/sysdeps/unix/sysv/linux/sys/mount.h index f29d158fb5..862c1f0407 100644 --- a/sysdeps/unix/sysv/linux/sys/mount.h +++ b/sysdeps/unix/sysv/linux/sys/mount.h @@ -83,7 +83,11 @@ enum /* Possible value for FLAGS parameter of `umount2'. */ -#define MNT_FORCE /* Force unmounting. */ +enum +{ + MNT_FORCE = 1 /* Force unmounting. */ +#define MNT_FORCE MNT_FORCE +}; __BEGIN_DECLS |