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authorhuaixv <44743118+huaixv@users.noreply.github.com>2021-03-25 21:40:59 +0800
committerhuaixv <44743118+huaixv@users.noreply.github.com>2021-03-25 21:40:59 +0800
commitc0cd8a68dc3d922733b5c455ecc3bfc23a76f042 (patch)
tree223a9f72d0cacb965057d6a2457e12067546a861 /fesvr/syscall.cc
parenta31ac28aff73dafa41c9968452df95647cf0ae8c (diff)
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Add `statx` syscall
Diffstat (limited to 'fesvr/syscall.cc')
-rw-r--r--fesvr/syscall.cc94
1 files changed, 94 insertions, 0 deletions
diff --git a/fesvr/syscall.cc b/fesvr/syscall.cc
index fb2c3f8..8a9b29b 100644
--- a/fesvr/syscall.cc
+++ b/fesvr/syscall.cc
@@ -57,6 +57,84 @@ struct riscv_stat
__unused4(), __unused5() {}
};
+
+struct riscv_statx_timestamp {
+ target_endian<int64_t> tv_sec;
+ target_endian<uint32_t> tv_nsec;
+ target_endian<int32_t> __reserved;
+};
+
+struct riscv_statx
+{
+ target_endian<uint32_t> mask;
+ target_endian<uint32_t> blksize;
+ target_endian<uint64_t> attributes;
+ target_endian<uint32_t> nlink;
+ target_endian<uint32_t> uid;
+ target_endian<uint32_t> gid;
+ target_endian<uint16_t> mode;
+ target_endian<uint16_t> __spare0[1];
+ target_endian<uint64_t> ino;
+ target_endian<uint64_t> size;
+ target_endian<uint64_t> blocks;
+ target_endian<uint64_t> attributes_mask;
+ struct riscv_statx_timestamp atime;
+ struct riscv_statx_timestamp btime;
+ struct riscv_statx_timestamp ctime;
+ struct riscv_statx_timestamp mtime;
+ target_endian<uint32_t> rdev_major;
+ target_endian<uint32_t> rdev_minor;
+ target_endian<uint32_t> dev_major;
+ target_endian<uint32_t> dev_minor;
+#ifdef HAVE_STATX_MNT_ID
+ target_endian<uint64_t> mnt_id;
+ target_endian<uint64_t> __spare2;
+ target_endian<uint64_t> __spare3[12];
+#else
+ target_endian<uint64_t> __spare2[14];
+#endif
+
+ riscv_statx(const struct statx& s, htif_t* htif)
+ : mask(htif->to_target<uint32_t>(s.stx_mask)),
+ blksize(htif->to_target<uint32_t>(s.stx_blksize)),
+ attributes(htif->to_target<uint64_t>(s.stx_attributes)),
+ nlink(htif->to_target<uint32_t>(s.stx_nlink)),
+ uid(htif->to_target<uint32_t>(s.stx_uid)),
+ gid(htif->to_target<uint32_t>(s.stx_gid)),
+ mode(htif->to_target<uint16_t>(s.stx_mode)), __spare0(),
+ ino(htif->to_target<uint64_t>(s.stx_ino)),
+ size(htif->to_target<uint64_t>(s.stx_size)),
+ blocks(htif->to_target<uint64_t>(s.stx_blocks)),
+ attributes_mask(htif->to_target<uint64_t>(s.stx_attributes_mask)),
+ atime {
+ htif->to_target<int64_t>(s.stx_atime.tv_sec),
+ htif->to_target<uint32_t>(s.stx_atime.tv_nsec)
+ },
+ btime {
+ htif->to_target<int64_t>(s.stx_btime.tv_sec),
+ htif->to_target<uint32_t>(s.stx_btime.tv_nsec)
+ },
+ ctime {
+ htif->to_target<int64_t>(s.stx_ctime.tv_sec),
+ htif->to_target<uint32_t>(s.stx_ctime.tv_nsec)
+ },
+ mtime {
+ htif->to_target<int64_t>(s.stx_mtime.tv_sec),
+ htif->to_target<uint32_t>(s.stx_mtime.tv_nsec)
+ },
+ rdev_major(htif->to_target<uint32_t>(s.stx_rdev_major)),
+ rdev_minor(htif->to_target<uint32_t>(s.stx_rdev_minor)),
+ dev_major(htif->to_target<uint32_t>(s.stx_dev_major)),
+ dev_minor(htif->to_target<uint32_t>(s.stx_dev_minor)),
+#ifdef HAVE_STATX_MNT_ID
+ mnt_id(htif->to_target<uint64_t>(s.stx_mnt_id)),
+ __spare2(), __spare3()
+#else
+ __spare2()
+#endif
+ {}
+};
+
syscall_t::syscall_t(htif_t* htif)
: htif(htif), memif(&htif->memif()), table(2048)
{
@@ -79,6 +157,7 @@ syscall_t::syscall_t(htif_t* htif)
table[79] = &syscall_t::sys_fstatat;
table[80] = &syscall_t::sys_fstat;
table[93] = &syscall_t::sys_exit;
+ table[291] = &syscall_t::sys_statx;
table[1039] = &syscall_t::sys_lstat;
table[2011] = &syscall_t::sys_getmainvars;
@@ -222,6 +301,21 @@ reg_t syscall_t::sys_lstat(reg_t pname, reg_t len, reg_t pbuf, reg_t a3, reg_t a
return ret;
}
+reg_t syscall_t::sys_statx(reg_t fd, reg_t pname, reg_t len, reg_t flags, reg_t mask, reg_t pbuf, reg_t a6)
+{
+ std::vector<char> name(len);
+ memif->read(pname, len, &name[0]);
+
+ struct statx buf;
+ reg_t ret = sysret_errno(statx(fds.lookup(fd), do_chroot(&name[0]).c_str(), flags, mask, &buf));
+ if (ret != (reg_t)-1)
+ {
+ riscv_statx rbuf(buf, htif);
+ memif->write(pbuf, sizeof(rbuf), &rbuf);
+ }
+ return ret;
+}
+
#define AT_SYSCALL(syscall, fd, name, ...) \
(syscall(fds.lookup(fd), int(fd) == RISCV_AT_FDCWD ? do_chroot(name).c_str() : (name), __VA_ARGS__))