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linux-user: increment MAX_ARG_PAGES

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There's a error When doing something like that :
find / -type f -print0 | xargs -0 echo

[ done in a arm chroot with qemu-arm and linux binfmt stuff or with
find / -type f -print0 | qemu-arm -L <path> <path>/usr/bin/xargs -0
echo ]

Doing this outsite qemu is fine. The problem was the huge number of
parameters. Increasing MAX_ARG_PAGES is fixing that.

While I was at it, I've modified linux-user/main.c to report error code
of loader_exec. It helps to debug/know what's wrong.

Signed-off-by: Arnaud Patard <arnaud.patard@rtp-net.org>
Signed-off-by: Riku Voipio <riku.voipio@iki.fi>
This commit is contained in:
Arnaud Patard 2009-06-19 10:39:36 +03:00 committed by Riku Voipio
parent e8d2a88755
commit fd4d81dd04
2 changed files with 6 additions and 4 deletions
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8
linux-user/main.c
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@ -2372,6 +2372,7 @@ int main(int argc, char **argv, char **envp)
envlist_t *envlist = NULL; envlist_t *envlist = NULL;
const char *argv0 = NULL; const char *argv0 = NULL;
int i; int i;
int ret;
if (argc <= 1) if (argc <= 1)
usage(); usage();
@ -2576,9 +2577,10 @@ int main(int argc, char **argv, char **envp)
env->opaque = ts; env->opaque = ts;
task_settid(ts); task_settid(ts);
if (loader_exec(filename, target_argv, target_environ, regs, ret = loader_exec(filename, target_argv, target_environ, regs,
info, &bprm) != 0) { info, &bprm);
printf("Error loading %s\n", filename); if (ret != 0) {
printf("Error %d while loading %s\n", ret, filename);
_exit(1); _exit(1);
} }

2
linux-user/qemu.h
View File

@ -140,7 +140,7 @@ extern const char *qemu_uname_release;
* and envelope for the new program. 32 should suffice, this gives * and envelope for the new program. 32 should suffice, this gives
* a maximum env+arg of 128kB w/4KB pages! * a maximum env+arg of 128kB w/4KB pages!
*/ */
#define MAX_ARG_PAGES 32 #define MAX_ARG_PAGES 33
/* /*
* This structure is used to hold the arguments that are * This structure is used to hold the arguments that are