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patches/ltrace/0.5.2/120-debian-ltrace-0.5.2-2.patch
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Tue Aug 02 18:28:10 2011 +0200 (2011-08-02)
changeset 2590 b64cfb67944e
permissions -rw-r--r--
scripts/functions: svn retrieval first tries the mirror for tarballs

The svn download helper looks for the local tarballs dir to see if it
can find a pre-downloaded tarball, and if it does not find it, does
the actual fetch to upstream via svn.

In the process, it does not even try to get a tarball from the local
mirror, which can be useful if the mirror has been pre-populated
manually (or with a previously downloaded tree).

Fake a tarball get with the standard tarball-download helper, but
without specifying any upstream URL, which makes the helper directly
try the LAN mirror.

Of course, if no mirror is specified, no URL wil be available, and
the standard svn retrieval will kick in.

Reported-by: ANDY KENNEDY <ANDY.KENNEDY@adtran.com>
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr> 
     1 --- ltrace-0.5.2.orig/TODO

     2 +++ ltrace-0.5.2/TODO

     3 @@ -37,3 +37,4 @@

     4  * debug: change "-d" option to be something like "-d elf,events", or "-d breakpoints"

     5  * Find out if a process is sharing memory with its parent?

     6  * When using -p, find out if that process is sharing memory with other procs

     7 +* After a clone(), syscalls may be seen as sysrets in s390 (see trace.c:syscall_p())

     8 --- ltrace-0.5.2.orig/process_event.c

     9 +++ ltrace-0.5.2/process_event.c

    10 @@ -170,7 +170,7 @@

    11  			enable_breakpoint(proc->pid, proc->breakpoint_being_enabled);

    12  			proc->breakpoint_being_enabled = NULL;

    13  		}

    14 -		if (proc->parent->state == STATE_ATTACHED && options.follow) {

    15 +		if (options.follow) {

    16  			proc->state = STATE_ATTACHED;

    17  		} else {

    18  			proc->state = STATE_IGNORED;

    19 --- ltrace-0.5.2.orig/sysdeps/linux-gnu/ppc/trace.c

    20 +++ ltrace-0.5.2/sysdeps/linux-gnu/ppc/trace.c

    21 @@ -50,9 +50,9 @@

    22  			*sysnum =

    23  			    (int)ptrace(PTRACE_PEEKUSER, proc->pid,

    24  					sizeof(long) * PT_R0, 0);

    25 -			if (proc->callstack_depth > 0

    26 -			    && proc->callstack[proc->callstack_depth -

    27 -					       1].is_syscall) {

    28 +			if (proc->callstack_depth > 0 &&

    29 +					proc->callstack[proc->callstack_depth - 1].is_syscall &&

    30 +					proc->callstack[proc->callstack_depth - 1].c_un.syscall == *sysnum) {

    31  				return 2;

    32  			}

    33  			return 1;

    34 --- ltrace-0.5.2.orig/sysdeps/linux-gnu/i386/trace.c

    35 +++ ltrace-0.5.2/sysdeps/linux-gnu/i386/trace.c

    36 @@ -32,7 +32,8 @@

    37  		*sysnum = ptrace(PTRACE_PEEKUSER, proc->pid, 4 * ORIG_EAX, 0);

    38  

    39  		if (proc->callstack_depth > 0 &&

    40 -		    proc->callstack[proc->callstack_depth - 1].is_syscall) {

    41 +				proc->callstack[proc->callstack_depth - 1].is_syscall &&

    42 +				proc->callstack[proc->callstack_depth - 1].c_un.syscall == *sysnum) {

    43  			return 2;

    44  		}

    45  

    46 --- ltrace-0.5.2.orig/sysdeps/linux-gnu/ia64/trace.c

    47 +++ ltrace-0.5.2/sysdeps/linux-gnu/ia64/trace.c

    48 @@ -106,8 +106,8 @@

    49  		if (insn == 0x1000000000 || insn == 0x1ffffffffff) {

    50  			*sysnum = r15;

    51  			if (proc->callstack_depth > 0 &&

    52 -			    proc->callstack[proc->callstack_depth -

    53 -					    1].is_syscall) {

    54 +				proc->callstack[proc->callstack_depth - 1].is_syscall &&

    55 +				proc->callstack[proc->callstack_depth - 1].c_un.syscall == *sysnum) {

    56  				return 2;

    57  			}

    58  			return 1;

    59 --- ltrace-0.5.2.orig/sysdeps/linux-gnu/m68k/trace.c

    60 +++ ltrace-0.5.2/sysdeps/linux-gnu/m68k/trace.c

    61 @@ -36,9 +36,8 @@

    62  		if (*sysnum >= 0) {

    63  			depth = proc->callstack_depth;

    64  			if (depth > 0 &&

    65 -			    proc->callstack[depth - 1].is_syscall &&

    66 -			    proc->callstack[depth - 1].c_un.syscall ==

    67 -			    *sysnum) {

    68 +					proc->callstack[depth - 1].is_syscall &&

    69 +					proc->callstack[depth - 1].c_un.syscall == *sysnum) {

    70  				return 2;

    71  			} else {

    72  				return 1;

    73 --- ltrace-0.5.2.orig/sysdeps/linux-gnu/alpha/trace.c

    74 +++ ltrace-0.5.2/sysdeps/linux-gnu/alpha/trace.c

    75 @@ -36,8 +36,9 @@

    76  			return 0;

    77  		*sysnum =

    78  		    ptrace(PTRACE_PEEKUSER, proc->pid, 0 /* REG_R0 */ , 0);

    79 -		if (proc->callstack_depth > 0

    80 -		    && proc->callstack[proc->callstack_depth - 1].is_syscall) {

    81 +		if (proc->callstack_depth > 0 &&

    82 +		    proc->callstack[proc->callstack_depth - 1].is_syscall &&

    83 +			proc->callstack[proc->callstack_depth - 1].c_un.syscall == *sysnum) {

    84  			return 2;

    85  		}

    86  		if (*sysnum >= 0 && *sysnum < 500) {

    87 --- ltrace-0.5.2.orig/sysdeps/linux-gnu/sparc/trace.c

    88 +++ ltrace-0.5.2/sysdeps/linux-gnu/sparc/trace.c

    89 @@ -33,9 +33,9 @@

    90  		insn = ptrace(PTRACE_PEEKTEXT, proc->pid, ip, 0);

    91  		if ((insn & 0xc1f8007f) == 0x81d00010) {

    92  			*sysnum = ((proc_archdep *) proc->arch_ptr)->regs.r_g1;

    93 -			if ((proc->callstack_depth > 0)

    94 -			    && proc->callstack[proc->callstack_depth -

    95 -					       1].is_syscall) {

    96 +			if (proc->callstack_depth > 0 &&

    97 +					proc->callstack[proc->callstack_depth - 1].is_syscall &&

    98 +					proc->callstack[proc->callstack_depth - 1].c_un.syscall == *sysnum) {

    99  				return 2;

   100  			} else if (*sysnum >= 0) {

   101  				return 1;

   102 --- ltrace-0.5.2.orig/sysdeps/linux-gnu/mipsel/trace.c

   103 +++ ltrace-0.5.2/sysdeps/linux-gnu/mipsel/trace.c

   104 @@ -60,33 +60,34 @@

   105  int

   106  syscall_p(Process *proc, int status, int *sysnum) {

   107  	if (WIFSTOPPED(status)

   108 -	    && WSTOPSIG(status) == (SIGTRAP | proc->tracesysgood)) {

   109 -       /* get the user's pc (plus 8) */

   110 -       long pc = (long)get_instruction_pointer(proc);

   111 -       /* fetch the SWI instruction */

   112 -       int insn = ptrace(PTRACE_PEEKTEXT, proc->pid, pc - 4, 0);

   113 -       int num = ptrace(PTRACE_PEEKTEXT, proc->pid, pc - 8, 0);

   114 -       

   115 -/*

   116 -  On a mipsel,  syscall looks like:

   117 -  24040fa1    li v0, 0x0fa1   # 4001 --> _exit syscall

   118 -  0000000c    syscall

   119 - */

   120 -      if(insn!=0x0000000c){

   121 -          return 0;

   122 -      }

   123 -

   124 -      *sysnum = (num & 0xFFFF) - 4000;

   125 -      /* if it is a syscall, return 1 or 2 */

   126 -      if (proc->callstack_depth > 0 &&

   127 -          proc->callstack[proc->callstack_depth - 1].is_syscall) {

   128 -          return 2;

   129 -      }

   130 -      

   131 -      if (*sysnum >= 0) {

   132 -          return 1;

   133 -      }

   134 -   }

   135 +			&& WSTOPSIG(status) == (SIGTRAP | proc->tracesysgood)) {

   136 +		/* get the user's pc (plus 8) */

   137 +		long pc = (long)get_instruction_pointer(proc);

   138 +		/* fetch the SWI instruction */

   139 +		int insn = ptrace(PTRACE_PEEKTEXT, proc->pid, pc - 4, 0);

   140 +		int num = ptrace(PTRACE_PEEKTEXT, proc->pid, pc - 8, 0);

   141 +

   142 +		/*

   143 +		   On a mipsel,  syscall looks like:

   144 +		   24040fa1    li v0, 0x0fa1   # 4001 --> _exit syscall

   145 +		   0000000c    syscall

   146 +		 */

   147 +		if(insn!=0x0000000c){

   148 +			return 0;

   149 +		}

   150 +

   151 +		*sysnum = (num & 0xFFFF) - 4000;

   152 +		/* if it is a syscall, return 1 or 2 */

   153 +		if (proc->callstack_depth > 0 &&

   154 +				proc->callstack[proc->callstack_depth - 1].is_syscall &&

   155 +				proc->callstack[proc->callstack_depth - 1].c_un.syscall == *sysnum) {

   156 +			return 2;

   157 +		}

   158 +

   159 +		if (*sysnum >= 0) {

   160 +			return 1;

   161 +		}

   162 +	}

   163  	return 0;

   164  }

   165  /**

   166 @@ -119,34 +120,34 @@

   167  */

   168  long

   169  gimme_arg(enum tof type, Process *proc, int arg_num, arg_type_info *info) {

   170 -    long ret;

   171 -    debug(2,"type %d arg %d",type,arg_num);

   172 -    if (type == LT_TOF_FUNCTION || type == LT_TOF_SYSCALL){

   173 -        if(arg_num <4){

   174 -            ret=ptrace(PTRACE_PEEKUSER,proc->pid,off_a0+arg_num,0);

   175 -            debug(2,"ret = %#lx",ret);

   176 -            return ret;

   177 -        } else {

   178 -            // If we need this, I think we can look at [sp+16] for arg_num==4.

   179 -            CP;

   180 -            return 0;

   181 -        }

   182 -    } 

   183 -    if(arg_num>=0){

   184 -       fprintf(stderr,"args on return?");

   185 -    }

   186 -    if(type == LT_TOF_FUNCTIONR) {

   187 -        return  ptrace(PTRACE_PEEKUSER,proc->pid,off_v0,0);

   188 -    }

   189 -    if (type == LT_TOF_SYSCALLR) {

   190 -        unsigned a3=ptrace(PTRACE_PEEKUSER, proc->pid,off_a3,0);

   191 -        unsigned v0=ptrace(PTRACE_PEEKUSER, proc->pid,off_v0,0);

   192 -        if(!a3){

   193 -            return v0;

   194 -        }

   195 -        return -1;

   196 -    }

   197 -    fprintf(stderr, "gimme_arg called with wrong arguments\n");

   198 +	long ret;

   199 +	debug(2,"type %d arg %d",type,arg_num);

   200 +	if (type == LT_TOF_FUNCTION || type == LT_TOF_SYSCALL){

   201 +		if(arg_num <4){

   202 +			ret=ptrace(PTRACE_PEEKUSER,proc->pid,off_a0+arg_num,0);

   203 +			debug(2,"ret = %#lx",ret);

   204 +			return ret;

   205 +		} else {

   206 +			// If we need this, I think we can look at [sp+16] for arg_num==4.

   207 +			CP;

   208 +			return 0;

   209 +		}

   210 +	} 

   211 +	if(arg_num>=0){

   212 +		fprintf(stderr,"args on return?");

   213 +	}

   214 +	if(type == LT_TOF_FUNCTIONR) {

   215 +		return  ptrace(PTRACE_PEEKUSER,proc->pid,off_v0,0);

   216 +	}

   217 +	if (type == LT_TOF_SYSCALLR) {

   218 +		unsigned a3=ptrace(PTRACE_PEEKUSER, proc->pid,off_a3,0);

   219 +		unsigned v0=ptrace(PTRACE_PEEKUSER, proc->pid,off_v0,0);

   220 +		if(!a3){

   221 +			return v0;

   222 +		}

   223 +		return -1;

   224 +	}

   225 +	fprintf(stderr, "gimme_arg called with wrong arguments\n");

   226  	return 0;

   227  }

   228  

   229 --- ltrace-0.5.2.orig/sysdeps/linux-gnu/x86_64/trace.c

   230 +++ ltrace-0.5.2/sysdeps/linux-gnu/x86_64/trace.c

   231 @@ -41,7 +41,8 @@

   232  		*sysnum = ptrace(PTRACE_PEEKUSER, proc->pid, 8 * ORIG_RAX, 0);

   233  

   234  		if (proc->callstack_depth > 0 &&

   235 -		    proc->callstack[proc->callstack_depth - 1].is_syscall) {

   236 +				proc->callstack[proc->callstack_depth - 1].is_syscall &&

   237 +				proc->callstack[proc->callstack_depth - 1].c_un.syscall == *sysnum) {

   238  			return 2;

   239  		}

   240
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