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Mon Aug 2 08:42:50 1993 Stu Grossman (grossman at cygnus.com)

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* gdbserver/remote-inflow.c (create_inferior):  Fix comments, and
	error msg.  Setup seperate process group for child.
	* (write_inferior_memory):  Sleep for 1 second and retry on ptrace
	failure.
This commit is contained in:
Stu Grossman
1993-08-02 15:48:42 +00:00
parent 884914bf03
commit db691e4b55
2 changed files with 32 additions and 7 deletions
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7
gdb/ChangeLog
View File

@ -1,3 +1,10 @@
Mon Aug 2 08:42:50 1993 Stu Grossman (grossman at cygnus.com)
* gdbserver/remote-inflow.c (create_inferior): Fix comments, and
error msg. Setup seperate process group for child.
* (write_inferior_memory): Sleep for 1 second and retry on ptrace
failure.
Sun Aug 1 22:58:18 1993 Stu Grossman (grossman at cygnus.com) Sun Aug 1 22:58:18 1993 Stu Grossman (grossman at cygnus.com)
* config/i386/i386lynx.mh (NATDEPFILES): Drop coredep (for now). * config/i386/i386lynx.mh (NATDEPFILES): Drop coredep (for now).

32
gdb/gdbserver/remote-inflow.c
View File

@ -44,8 +44,7 @@ char registers[REGISTER_BYTES];
#include <sys/ptrace.h> #include <sys/ptrace.h>
/* Start an inferior process and returns its pid. /* Start an inferior process and returns its pid.
ALLARGS is a vector of program-name and args. ALLARGS is a vector of program-name and args. */
ENV is the environment vector to pass. */
int int
create_inferior (program, allargs) create_inferior (program, allargs)
@ -60,11 +59,21 @@ create_inferior (program, allargs)
if (pid == 0) if (pid == 0)
{ {
int pgrp;
/* Switch child to it's own process group so that signals won't
directly affect gdbserver. */
pgrp = getpid();
setpgrp(0, pgrp);
ioctl (0, TIOCSPGRP, &pgrp);
ptrace (PTRACE_TRACEME); ptrace (PTRACE_TRACEME);
execv (program, allargs); execv (program, allargs);
fprintf (stderr, "Cannot exec %s: %s.\n", program, fprintf (stderr, "GDBserver (process %d): Cannot exec %s: %s.\n",
getpid(), program,
errno < sys_nerr ? sys_errlist[errno] : "unknown error"); errno < sys_nerr ? sys_errlist[errno] : "unknown error");
fflush (stderr); fflush (stderr);
_exit (0177); _exit (0177);
@ -317,10 +326,19 @@ write_inferior_memory (memaddr, myaddr, len)
for (i = 0; i < count; i++, addr += sizeof (int)) for (i = 0; i < count; i++, addr += sizeof (int))
{ {
errno = 0; while (1)
ptrace (PTRACE_POKETEXT, inferior_pid, addr, buffer[i]); {
if (errno) errno = 0;
return errno; ptrace (PTRACE_POKETEXT, inferior_pid, addr, buffer[i]);
if (errno)
{
fprintf(stderr, "ptrace (PTRACE_POKETEXT): errno=%d, inferior_pid=0x%x, addr=0x%x, buffer[i] = 0x%x\n", errno, inferior_pid, addr, buffer[i]);
fprintf(stderr, "Sleeping for 1 second\n");
sleep(1);
}
else
break;
}
} }
return 0; return 0;