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| author | Stacey Son <sson@FreeBSD.org> | 2023-09-25 21:27:03 +0300 |
|---|---|---|
| committer | Warner Losh <imp@bsdimp.com> | 2023-10-03 17:14:07 -0600 |
| commit | 83b045ad4e0106836963185ed696991883104359 (patch) | |
| tree | 1a66ac8c0ab78008ea95bce29695c8cdb863f172 /bsd-user/bsd-mem.h | |
| parent | 0c1ced42c84bdd8beeef6c40dff8d143cf409f15 (diff) | |
| download | focaccia-qemu-83b045ad4e0106836963185ed696991883104359.tar.gz focaccia-qemu-83b045ad4e0106836963185ed696991883104359.zip | |
bsd-user: Implement mincore(2)
Signed-off-by: Stacey Son <sson@FreeBSD.org> Signed-off-by: Karim Taha <kariem.taha2.7@gmail.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20230925182709.4834-18-kariem.taha2.7@gmail.com>
Diffstat (limited to 'bsd-user/bsd-mem.h')
| -rw-r--r-- | bsd-user/bsd-mem.h | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/bsd-user/bsd-mem.h b/bsd-user/bsd-mem.h index b00ab3aed8..0c8d96d9a4 100644 --- a/bsd-user/bsd-mem.h +++ b/bsd-user/bsd-mem.h @@ -189,4 +189,27 @@ static inline abi_long do_bsd_minherit(abi_long addr, abi_long len, return get_errno(minherit(g2h_untagged(addr), len, inherit)); } +/* mincore(2) */ +static inline abi_long do_bsd_mincore(abi_ulong target_addr, abi_ulong len, + abi_ulong target_vec) +{ + abi_long ret; + void *p; + abi_ulong vec_len = DIV_ROUND_UP(len, TARGET_PAGE_SIZE); + + if (!guest_range_valid_untagged(target_addr, len) + || !page_check_range(target_addr, len, PAGE_VALID)) { + return -TARGET_EFAULT; + } + + p = lock_user(VERIFY_WRITE, target_vec, vec_len, 0); + if (p == NULL) { + return -TARGET_EFAULT; + } + ret = get_errno(mincore(g2h_untagged(target_addr), len, p)); + unlock_user(p, target_vec, vec_len); + + return ret; +} + #endif /* BSD_USER_BSD_MEM_H */ |