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bsd-user: Implement getgroups(2) and setgroups(2) system calls.

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Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Karim Taha <kariem.taha2.7@gmail.com>
Reviewed-by: Warner Losh <imp@bsdimp.com>
Message-Id: <20230925182425.3163-12-kariem.taha2.7@gmail.com>
This commit is contained in:
Stacey Son 2023-09-25 21:24:08 +03:00 committed by Warner Losh
parent b623031ca6
commit a478416dc8
2 changed files with 53 additions and 0 deletions
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44
bsd-user/bsd-proc.h
View File

@ -41,4 +41,48 @@ static inline abi_long do_bsd_exit(void *cpu_env, abi_long arg1)
return 0;
}
/* getgroups(2) */
static inline abi_long do_bsd_getgroups(abi_long gidsetsize, abi_long arg2)
{
abi_long ret;
uint32_t *target_grouplist;
g_autofree gid_t *grouplist;
int i;
grouplist = g_try_new(gid_t, gidsetsize);
ret = get_errno(getgroups(gidsetsize, grouplist));
if (gidsetsize != 0) {
if (!is_error(ret)) {
target_grouplist = lock_user(VERIFY_WRITE, arg2, gidsetsize * 2, 0);
if (!target_grouplist) {
return -TARGET_EFAULT;
}
for (i = 0; i < ret; i++) {
target_grouplist[i] = tswap32(grouplist[i]);
}
unlock_user(target_grouplist, arg2, gidsetsize * 2);
}
}
return ret;
}
/* setgroups(2) */
static inline abi_long do_bsd_setgroups(abi_long gidsetsize, abi_long arg2)
{
uint32_t *target_grouplist;
g_autofree gid_t *grouplist;
int i;
grouplist = g_try_new(gid_t, gidsetsize);
target_grouplist = lock_user(VERIFY_READ, arg2, gidsetsize * 2, 1);
if (!target_grouplist) {
return -TARGET_EFAULT;
}
for (i = 0; i < gidsetsize; i++) {
grouplist[i] = tswap32(target_grouplist[i]);
}
unlock_user(target_grouplist, arg2, 0);
return get_errno(setgroups(gidsetsize, grouplist));
}
#endif /* !BSD_PROC_H_ */

9
bsd-user/freebsd/os-syscall.c
View File

@ -223,6 +223,15 @@ static abi_long freebsd_syscall(void *cpu_env, int num, abi_long arg1,
ret = do_bsd_exit(cpu_env, arg1);
break;
case TARGET_FREEBSD_NR_getgroups: /* getgroups(2) */
ret = do_bsd_getgroups(arg1, arg2);
break;
case TARGET_FREEBSD_NR_setgroups: /* setgroups(2) */
ret = do_bsd_setgroups(arg1, arg2);
break;
/*
* File system calls.
*/