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Merge branch 'master' into feature/add-syscalls-for-sqlite3

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This commit is contained in:
Mark McCaskey
2019-03-25 11:14:01 -07:00
parent 1ce29e788f 0e632cab6e
commit f66b024390
11 changed files with 481 additions and 2 deletions
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144
lib/emscripten/src/syscalls/unix.rs
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@ -3,6 +3,7 @@ use crate::varargs::VarArgs;
/// Syscall list: https://www.cs.utexas.edu/~bismith/test/syscalls/syscalls32.html
use libc::{
accept,
access,
bind,
c_char,
c_int,
@ -10,6 +11,7 @@ use libc::{
chown,
// fcntl, setsockopt, getppid
connect,
dup,
dup2,
fchmod,
fchown,
@ -17,18 +19,23 @@ use libc::{
// ENOTTY,
fsync,
getgid,
getgroups,
getpeername,
getrusage,
getsockname,
getsockopt,
gid_t,
in_addr_t,
in_port_t,
ioctl,
lchown,
link,
// iovec,
listen,
mkdir,
mode_t,
msghdr,
nice,
open,
pid_t,
pread,
@ -45,9 +52,11 @@ use libc::{
sendto,
setpgid,
setsockopt,
size_t,
sockaddr,
socket,
socklen_t,
symlink,
uid_t,
uname,
utsname,
@ -70,10 +79,11 @@ use std::mem;
#[link(name = "c")]
extern "C" {
pub fn wait4(pid: pid_t, status: *mut c_int, options: c_int, rusage: *mut rusage) -> pid_t;
pub fn madvise(addr: *mut c_void, len: size_t, advice: c_int) -> c_int;
}
#[cfg(not(target_os = "macos"))]
use libc::wait4;
use libc::{madvise, wait4};
// Another conditional constant for name resolution: Macos et iOS use
// SO_NOSIGPIPE as a setsockopt flag to disable SIGPIPE emission on socket.
@ -99,6 +109,89 @@ pub fn ___syscall5(ctx: &mut Ctx, _which: c_int, mut varargs: VarArgs) -> c_int
fd
}
/// link
pub fn ___syscall9(ctx: &mut Ctx, _which: c_int, mut varargs: VarArgs) -> c_int {
debug!("emscripten::___syscall9 (link) {}", _which);
let oldname: c_int = varargs.get(ctx);
let newname: c_int = varargs.get(ctx);
let oldname_ptr = emscripten_memory_pointer!(ctx.memory(0), oldname) as *const i8;
let newname_ptr = emscripten_memory_pointer!(ctx.memory(0), newname) as *const i8;
let result = unsafe { link(oldname_ptr, newname_ptr) };
debug!(
"=> oldname: {}, newname: {}, result: {}",
unsafe { std::ffi::CStr::from_ptr(oldname_ptr).to_str().unwrap() },
unsafe { std::ffi::CStr::from_ptr(newname_ptr).to_str().unwrap() },
result,
);
result
}
/// getrusage
pub fn ___syscall77(ctx: &mut Ctx, _which: c_int, mut varargs: VarArgs) -> c_int {
debug!("emscripten::___syscall77 (getrusage) {}", _which);
let resource: c_int = varargs.get(ctx);
let rusage_ptr: c_int = varargs.get(ctx);
#[allow(clippy::cast_ptr_alignment)]
let rusage = emscripten_memory_pointer!(ctx.memory(0), rusage_ptr) as *mut rusage;
assert_eq!(8, mem::align_of_val(&rusage));
unsafe { getrusage(resource, rusage) }
}
/// symlink
pub fn ___syscall83(ctx: &mut Ctx, _which: c_int, mut varargs: VarArgs) -> c_int {
debug!("emscripten::___syscall83 (symlink) {}", _which);
let path1_ptr: c_int = varargs.get(ctx);
let path2_ptr: c_int = varargs.get(ctx);
let path1 = emscripten_memory_pointer!(ctx.memory(0), path1_ptr) as *mut i8;
let path2 = emscripten_memory_pointer!(ctx.memory(0), path2_ptr) as *mut i8;
let result = unsafe { symlink(path1, path2) };
debug!(
"=> path1: {}, path2: {}, result: {}",
unsafe { std::ffi::CStr::from_ptr(path1).to_str().unwrap() },
unsafe { std::ffi::CStr::from_ptr(path2).to_str().unwrap() },
result,
);
result
}
/// lchown
pub fn ___syscall198(ctx: &mut Ctx, _which: c_int, mut varargs: VarArgs) -> c_int {
debug!("emscripten::___syscall198 (lchown) {}", _which);
let path: c_int = varargs.get(ctx);
let uid: uid_t = varargs.get(ctx);
let gid: gid_t = varargs.get(ctx);
let path_ptr = emscripten_memory_pointer!(ctx.memory(0), path) as *const i8;
let result = unsafe { lchown(path_ptr, uid, gid) };
debug!(
"=> path: {}, uid: {}, gid: {}, result: {}",
unsafe { std::ffi::CStr::from_ptr(path_ptr).to_str().unwrap() },
uid,
gid,
result,
);
result
}
/// getgroups
pub fn ___syscall205(ctx: &mut Ctx, _which: c_int, mut varargs: VarArgs) -> c_int {
debug!("emscripten::___syscall205 (getgroups) {}", _which);
let ngroups_max: c_int = varargs.get(ctx);
let groups: c_int = varargs.get(ctx);
#[allow(clippy::cast_ptr_alignment)]
let gid_ptr = emscripten_memory_pointer!(ctx.memory(0), groups) as *mut gid_t;
assert_eq!(4, mem::align_of_val(&gid_ptr));
let result = unsafe { getgroups(ngroups_max, gid_ptr) };
debug!(
"=> ngroups_max: {}, gid_ptr: {:?}, result: {}",
ngroups_max, gid_ptr, result,
);
result
}
// chown
pub fn ___syscall212(ctx: &mut Ctx, _which: c_int, mut varargs: VarArgs) -> c_int {
debug!("emscripten::___syscall212 (chown) {}", _which);
@ -112,6 +205,41 @@ pub fn ___syscall212(ctx: &mut Ctx, _which: c_int, mut varargs: VarArgs) -> c_in
unsafe { chown(pathname_addr, owner, group) }
}
/// madvise
pub fn ___syscall219(ctx: &mut Ctx, _which: c_int, mut varargs: VarArgs) -> c_int {
debug!("emscripten::___syscall212 (chown) {}", _which);
let addr_ptr: c_int = varargs.get(ctx);
let len: usize = varargs.get(ctx);
let advice: c_int = varargs.get(ctx);
let addr = emscripten_memory_pointer!(ctx.memory(0), addr_ptr) as *mut c_void;
unsafe { madvise(addr, len, advice) }
}
/// access
pub fn ___syscall33(ctx: &mut Ctx, _which: c_int, mut varargs: VarArgs) -> c_int {
debug!("emscripten::___syscall33 (access) {}", _which);
let path_ptr: c_int = varargs.get(ctx);
let amode: c_int = varargs.get(ctx);
let path = emscripten_memory_pointer!(ctx.memory(0), path_ptr) as *const i8;
let result = unsafe { access(path, amode) };
debug!(
"=> path: {}, result: {}",
unsafe { std::ffi::CStr::from_ptr(path).to_str().unwrap() },
result
);
result
}
/// nice
pub fn ___syscall34(ctx: &mut Ctx, _which: c_int, mut varargs: VarArgs) -> c_int {
debug!("emscripten::___syscall34 (nice) {}", _which);
let inc_r: c_int = varargs.get(ctx);
unsafe { nice(inc_r) }
}
// mkdir
pub fn ___syscall39(ctx: &mut Ctx, _which: c_int, mut varargs: VarArgs) -> c_int {
debug!("emscripten::___syscall39 (mkdir) {}", _which);
@ -121,6 +249,19 @@ pub fn ___syscall39(ctx: &mut Ctx, _which: c_int, mut varargs: VarArgs) -> c_int
unsafe { mkdir(pathname_addr, mode as _) }
}
/// dup
pub fn ___syscall41(ctx: &mut Ctx, _which: c_int, mut varargs: VarArgs) -> c_int {
debug!("emscripten::___syscall41 (dup) {}", _which);
let fd: c_int = varargs.get(ctx);
unsafe { dup(fd) }
}
/// getgid
pub fn ___syscall200(_ctx: &mut Ctx, _one: i32, _two: i32) -> i32 {
debug!("emscripten::___syscall200 (getgid)");
unsafe { getgid() as i32 }
}
// getgid
pub fn ___syscall201(_ctx: &mut Ctx, _one: i32, _two: i32) -> i32 {
debug!("emscripten::___syscall201 (getgid)");
@ -531,6 +672,7 @@ pub fn ___syscall114(ctx: &mut Ctx, _which: c_int, mut varargs: VarArgs) -> pid_
let options: c_int = varargs.get(ctx);
let rusage: u32 = varargs.get(ctx);
let status_addr = emscripten_memory_pointer!(ctx.memory(0), status) as *mut c_int;
let rusage_addr = emscripten_memory_pointer!(ctx.memory(0), rusage) as *mut rusage;
let res = unsafe { wait4(pid, status_addr, options, rusage_addr) };
debug!(