int
main(int argc, char *argv[])
{
int error;
fprintf(stderr, "test capabilities: ");
#ifdef SETSUGID_SUPPORTED
fprintf(stderr, "[SETSUGID_SUPPORTED] ");
#endif
#ifdef SETSUGID_SUPPORTED_BUT_NO_LIBC_STUB
fprintf(stderr, "[SETSUGID_SUPPORTED_BUT_NO_LIBC_STUB] ");
#endif
#ifdef CHECK_CRED_SET
fprintf(stderr, "[CHECK_CRED_SET] ");
#endif
fprintf(stderr, "\n");
error = setugid(1);
if (error) {
perror("setugid");
fprintf(stderr,
"This test suite requires options REGRESSION\n");
return (-1);
}
enact_scenarios();
return (0);
}
/*
* create a file and send fd on success
* return -errno on error
*/
static int do_create(struct iovec *iovec)
{
int ret;
V9fsString path;
int flags, mode, uid, gid, cur_uid, cur_gid;
v9fs_string_init(&path);
ret = proxy_unmarshal(iovec, PROXY_HDR_SZ, "sdddd",
&path, &flags, &mode, &uid, &gid);
if (ret < 0) {
goto unmarshal_err_out;
}
ret = setugid(uid, gid, &cur_uid, &cur_gid);
if (ret < 0) {
goto unmarshal_err_out;
}
ret = open(path.data, flags, mode);
if (ret < 0) {
ret = -errno;
}
resetugid(cur_uid, cur_gid);
unmarshal_err_out:
v9fs_string_free(&path);
return ret;
}
/*
* Set the current process's credentials to match the passed credential.
*/
static int
cred_set(struct cred *cred)
{
int error;
error = setresuid(cred->cr_ruid, cred->cr_euid, cred->cr_svuid);
if (error)
return (error);
error = setugid(cred->cr_issetugid);
if (error) {
perror("__setugid");
return (error);
}
#ifdef CHECK_CRED_SET
{
uid_t ruid, euid, svuid;
error = getresuid(&ruid, &euid, &svuid);
if (error) {
perror("getresuid");
return (-1);
}
assert(ruid == cred->cr_ruid);
assert(euid == cred->cr_euid);
assert(svuid == cred->cr_svuid);
assert(cred->cr_issetugid == issetugid());
}
#endif /* !CHECK_CRED_SET */
return (0);
}
/*
* create other filesystem objects and send 0 on success
* return -errno on error
*/
static int do_create_others(int type, struct iovec *iovec)
{
dev_t rdev;
int retval = 0;
int offset = PROXY_HDR_SZ;
V9fsString oldpath, path;
int mode, uid, gid, cur_uid, cur_gid;
v9fs_string_init(&path);
v9fs_string_init(&oldpath);
retval = proxy_unmarshal(iovec, offset, "dd", &uid, &gid);
if (retval < 0) {
return retval;
}
offset += retval;
retval = setugid(uid, gid, &cur_uid, &cur_gid);
if (retval < 0) {
goto unmarshal_err_out;
}
switch (type) {
case T_MKNOD:
retval = proxy_unmarshal(iovec, offset, "sdq", &path, &mode, &rdev);
if (retval < 0) {
goto err_out;
}
retval = mknod(path.data, mode, rdev);
break;
case T_MKDIR:
retval = proxy_unmarshal(iovec, offset, "sd", &path, &mode);
if (retval < 0) {
goto err_out;
}
retval = mkdir(path.data, mode);
break;
case T_SYMLINK:
retval = proxy_unmarshal(iovec, offset, "ss", &oldpath, &path);
if (retval < 0) {
goto err_out;
}
retval = symlink(oldpath.data, path.data);
break;
}
if (retval < 0) {
retval = -errno;
}
err_out:
resetugid(cur_uid, cur_gid);
unmarshal_err_out:
v9fs_string_free(&path);
v9fs_string_free(&oldpath);
return retval;
}
