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linux-user: remove MAX_ARG_PAGES limit

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Instead of creating a temporary copy for the whole environment and
the arguments, directly copy everything to the target stack.

For this to work, we have to change the order of stack creation and
copying the arguments.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Stefan Brüns <stefan.bruens@rwth-aachen.de>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
This commit is contained in:
Stefan Brüns 2015-09-02 03:38:53 +02:00 • committed by Riku Voipio
parent 84646ee25b
commit 59baae9a62
5 changed files with 55 additions and 75 deletions
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7
linux-user/linuxload.c
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@ -135,10 +135,7 @@ int loader_exec(int fdexec, const char *filename, char **argv, char **envp,
struct linux_binprm *bprm)
{
int retval;
int i;
bprm->p = TARGET_PAGE_SIZE*MAX_ARG_PAGES-sizeof(unsigned int);
memset(bprm->page, 0, sizeof(bprm->page));
bprm->fd = fdexec;
bprm->filename = (char *)filename;
bprm->argc = count(argv);
@ -172,9 +169,5 @@ int loader_exec(int fdexec, const char *filename, char **argv, char **envp,
return retval;
}
/* Something went wrong, return the inode and free the argument pages*/
for (i=0 ; i<MAX_ARG_PAGES ; i++) {
g_free(bprm->page[i]);
}
return(retval);
}