#define NGROUPS 32
/* ??? This should really be somewhere else. */
-void memcpy_to_target(target_ulong dest, const void *src,
- unsigned long len)
+abi_long memcpy_to_target(abi_ulong dest, const void *src,
+ unsigned long len)
{
void *host_ptr;
- host_ptr = lock_user(dest, len, 0);
+ host_ptr = lock_user(VERIFY_WRITE, dest, len, 0);
+ if (!host_ptr)
+ return -TARGET_EFAULT;
memcpy(host_ptr, src, len);
unlock_user(host_ptr, dest, 1);
-}
-
-static int in_group_p(gid_t g)
-{
- /* return TRUE if we're in the specified group, FALSE otherwise */
- int ngroup;
- int i;
- gid_t grouplist[NGROUPS];
-
- ngroup = getgroups(NGROUPS, grouplist);
- for(i = 0; i < ngroup; i++) {
- if(grouplist[i] == g) {
- return 1;
- }
- }
return 0;
}
{
struct stat st;
int mode;
- int retval, id_change;
+ int retval;
if(fstat(bprm->fd, &st) < 0) {
return(-errno);
bprm->e_uid = geteuid();
bprm->e_gid = getegid();
- id_change = 0;
/* Set-uid? */
if(mode & S_ISUID) {
bprm->e_uid = st.st_uid;
- if(bprm->e_uid != geteuid()) {
- id_change = 1;
- }
}
/* Set-gid? */
*/
if ((mode & (S_ISGID | S_IXGRP)) == (S_ISGID | S_IXGRP)) {
bprm->e_gid = st.st_gid;
- if (!in_group_p(bprm->e_gid)) {
- id_change = 1;
- }
}
- memset(bprm->buf, 0, sizeof(bprm->buf));
- retval = lseek(bprm->fd, 0L, SEEK_SET);
- if(retval >= 0) {
- retval = read(bprm->fd, bprm->buf, 128);
- }
- if(retval < 0) {
+ retval = read(bprm->fd, bprm->buf, BPRM_BUF_SIZE);
+ if (retval < 0) {
perror("prepare_binprm");
exit(-1);
- /* return(-errno); */
}
- else {
- return(retval);
+ if (retval < BPRM_BUF_SIZE) {
+ /* Make sure the rest of the loader won't read garbage. */
+ memset(bprm->buf + retval, 0, BPRM_BUF_SIZE - retval);
}
+ return retval;
}
/* Construct the envp and argv tables on the target stack. */
-target_ulong loader_build_argptr(int envc, int argc, target_ulong sp,
- target_ulong stringp, int push_ptr)
+abi_ulong loader_build_argptr(int envc, int argc, abi_ulong sp,
+ abi_ulong stringp, int push_ptr)
{
- int n = sizeof(target_ulong);
- target_ulong envp;
- target_ulong argv;
+ TaskState *ts = (TaskState *)thread_env->opaque;
+ int n = sizeof(abi_ulong);
+ abi_ulong envp;
+ abi_ulong argv;
sp -= (envc + 1) * n;
envp = sp;
sp -= (argc + 1) * n;
argv = sp;
if (push_ptr) {
- sp -= n; tputl(sp, envp);
- sp -= n; tputl(sp, argv);
- }
- sp -= n; tputl(sp, argc);
-
+ /* FIXME - handle put_user() failures */
+ sp -= n;
+ put_user_ual(envp, sp);
+ sp -= n;
+ put_user_ual(argv, sp);
+ }
+ sp -= n;
+ /* FIXME - handle put_user() failures */
+ put_user_ual(argc, sp);
+ ts->info->arg_start = stringp;
while (argc-- > 0) {
- tputl(argv, stringp); argv += n;
+ /* FIXME - handle put_user() failures */
+ put_user_ual(stringp, argv);
+ argv += n;
stringp += target_strlen(stringp) + 1;
}
- tputl(argv, 0);
+ ts->info->arg_end = stringp;
+ /* FIXME - handle put_user() failures */
+ put_user_ual(0, argv);
while (envc-- > 0) {
- tputl(envp, stringp); envp += n;
+ /* FIXME - handle put_user() failures */
+ put_user_ual(stringp, envp);
+ envp += n;
stringp += target_strlen(stringp) + 1;
}
- tputl(envp, 0);
+ /* FIXME - handle put_user() failures */
+ put_user_ual(0, envp);
return sp;
}
int loader_exec(const char * filename, char ** argv, char ** envp,
- struct target_pt_regs * regs, struct image_info *infop)
+ struct target_pt_regs * regs, struct image_info *infop,
+ struct linux_binprm *bprm)
{
- struct linux_binprm bprm;
int retval;
int i;
- bprm.p = TARGET_PAGE_SIZE*MAX_ARG_PAGES-sizeof(unsigned int);
- for (i=0 ; i<MAX_ARG_PAGES ; i++) /* clear page-table */
- bprm.page[i] = 0;
+ bprm->p = TARGET_PAGE_SIZE*MAX_ARG_PAGES-sizeof(unsigned int);
+ memset(bprm->page, 0, sizeof(bprm->page));
retval = open(filename, O_RDONLY);
- if (retval < 0)
- return retval;
- bprm.fd = retval;
- bprm.filename = (char *)filename;
- bprm.argc = count(argv);
- bprm.argv = argv;
- bprm.envc = count(envp);
- bprm.envp = envp;
-
- retval = prepare_binprm(&bprm);
+ if (retval < 0) {
+ return -errno;
+ }
+ bprm->fd = retval;
+ bprm->filename = (char *)filename;
+ bprm->argc = count(argv);
+ bprm->argv = argv;
+ bprm->envc = count(envp);
+ bprm->envp = envp;
- infop->host_argv = argv;
+ retval = prepare_binprm(bprm);
if(retval>=0) {
- if (bprm.buf[0] == 0x7f
- && bprm.buf[1] == 'E'
- && bprm.buf[2] == 'L'
- && bprm.buf[3] == 'F') {
- retval = load_elf_binary(&bprm,regs,infop);
+ if (bprm->buf[0] == 0x7f
+ && bprm->buf[1] == 'E'
+ && bprm->buf[2] == 'L'
+ && bprm->buf[3] == 'F') {
+ retval = load_elf_binary(bprm, regs, infop);
#if defined(TARGET_HAS_BFLT)
- } else if (bprm.buf[0] == 'b'
- && bprm.buf[1] == 'F'
- && bprm.buf[2] == 'L'
- && bprm.buf[3] == 'T') {
- retval = load_flt_binary(&bprm,regs,infop);
+ } else if (bprm->buf[0] == 'b'
+ && bprm->buf[1] == 'F'
+ && bprm->buf[2] == 'L'
+ && bprm->buf[3] == 'T') {
+ retval = load_flt_binary(bprm,regs,infop);
#endif
} else {
- fprintf(stderr, "Unknown binary format\n");
- return -1;
+ return -ENOEXEC;
}
}
-
+
if(retval>=0) {
/* success. Initialize important registers */
do_init_thread(regs, infop);
/* Something went wrong, return the inode and free the argument pages*/
for (i=0 ; i<MAX_ARG_PAGES ; i++) {
- free(bprm.page[i]);
+ g_free(bprm->page[i]);
}
return(retval);
}
projects / qemu.git / blobdiff