diff options
Diffstat (limited to 'vendor/modernc.org/libc/libc_unix.go')
| -rw-r--r-- | vendor/modernc.org/libc/libc_unix.go | 1385 |
1 files changed, 1385 insertions, 0 deletions
diff --git a/vendor/modernc.org/libc/libc_unix.go b/vendor/modernc.org/libc/libc_unix.go new file mode 100644 index 0000000..3521442 --- /dev/null +++ b/vendor/modernc.org/libc/libc_unix.go @@ -0,0 +1,1385 @@ +// Copyright 2020 The Libc Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +//go:build unix && !(linux && (amd64 || arm64 || loong64)) + +package libc // import "modernc.org/libc" + +import ( + "bufio" + // "encoding/hex" + "math" + "math/rand" + "os" + gosignal "os/signal" + "reflect" + "runtime" + "strconv" + "strings" + "sync" + "syscall" + "time" + "unsafe" + + guuid "github.com/google/uuid" + "github.com/ncruces/go-strftime" + "golang.org/x/sys/unix" + "modernc.org/libc/errno" + "modernc.org/libc/grp" + "modernc.org/libc/limits" + "modernc.org/libc/poll" + "modernc.org/libc/pwd" + "modernc.org/libc/signal" + "modernc.org/libc/stdio" + "modernc.org/libc/stdlib" + "modernc.org/libc/sys/types" + ctime "modernc.org/libc/time" +) + +var staticGetpwnam pwd.Passwd + +func init() { + atExit = append(atExit, func() { closePasswd(&staticGetpwnam) }) +} + +// sighandler_t signal(int signum, sighandler_t handler); +func Xsignal(t *TLS, signum int32, handler uintptr) uintptr { //TODO use sigaction? + if __ccgo_strace { + trc("t=%v signum=%v handler=%v, (%v:)", t, signum, handler, origin(2)) + } + signalsMu.Lock() + + defer signalsMu.Unlock() + + r := signals[signum] + signals[signum] = handler + switch handler { + case signal.SIG_DFL: + panic(todo("%v %#x", syscall.Signal(signum), handler)) + case signal.SIG_IGN: + switch r { + case signal.SIG_DFL: + gosignal.Ignore(syscall.Signal(signum)) //TODO + case signal.SIG_IGN: + gosignal.Ignore(syscall.Signal(signum)) + default: + panic(todo("%v %#x", syscall.Signal(signum), handler)) + } + default: + switch r { + case signal.SIG_DFL: + c := make(chan os.Signal, 1) + gosignal.Notify(c, syscall.Signal(signum)) + go func() { //TODO mechanism to stop/cancel + for { + <-c + var f func(*TLS, int32) + *(*uintptr)(unsafe.Pointer(&f)) = handler + tls := NewTLS() + f(tls, signum) + tls.Close() + } + }() + case signal.SIG_IGN: + panic(todo("%v %#x", syscall.Signal(signum), handler)) + default: + panic(todo("%v %#x", syscall.Signal(signum), handler)) + } + } + return r +} + +// void rewind(FILE *stream); +func Xrewind(t *TLS, stream uintptr) { + if __ccgo_strace { + trc("t=%v stream=%v, (%v:)", t, stream, origin(2)) + } + Xfseek(t, stream, 0, stdio.SEEK_SET) +} + +// int putchar(int c); +func Xputchar(t *TLS, c int32) int32 { + if __ccgo_strace { + trc("t=%v c=%v, (%v:)", t, c, origin(2)) + } + if _, err := write([]byte{byte(c)}); err != nil { + return stdio.EOF + } + + return int32(c) +} + +// int gethostname(char *name, size_t len); +func Xgethostname(t *TLS, name uintptr, slen types.Size_t) int32 { + if __ccgo_strace { + trc("t=%v name=%v slen=%v, (%v:)", t, name, slen, origin(2)) + } + + if slen == 0 { + return 0 + } + + s, err := os.Hostname() + if err != nil { + panic(todo("")) + } + + n := len(s) + if len(s) >= int(slen) { + n = int(slen) - 1 + } + sh := (*reflect.StringHeader)(unsafe.Pointer(&s)) + copy((*RawMem)(unsafe.Pointer(name))[:n:n], (*RawMem)(unsafe.Pointer(sh.Data))[:n:n]) + *(*byte)(unsafe.Pointer(name + uintptr(n))) = 0 + return 0 +} + +// int remove(const char *pathname); +func Xremove(t *TLS, pathname uintptr) int32 { + if __ccgo_strace { + trc("t=%v pathname=%v, (%v:)", t, pathname, origin(2)) + } + panic(todo("")) +} + +// long pathconf(const char *path, int name); +func Xpathconf(t *TLS, path uintptr, name int32) long { + if __ccgo_strace { + trc("t=%v path=%v name=%v, (%v:)", t, path, name, origin(2)) + } + panic(todo("")) +} + +// ssize_t recvfrom(int sockfd, void *buf, size_t len, int flags, struct sockaddr *src_addr, socklen_t *addrlen); +func Xrecvfrom(t *TLS, sockfd int32, buf uintptr, len types.Size_t, flags int32, src_addr, addrlen uintptr) types.Ssize_t { + if __ccgo_strace { + trc("t=%v sockfd=%v buf=%v len=%v flags=%v addrlen=%v, (%v:)", t, sockfd, buf, len, flags, addrlen, origin(2)) + } + panic(todo("")) +} + +// ssize_t sendto(int sockfd, const void *buf, size_t len, int flags, const struct sockaddr *dest_addr, socklen_t addrlen); +func Xsendto(t *TLS, sockfd int32, buf uintptr, len types.Size_t, flags int32, src_addr uintptr, addrlen socklen_t) types.Ssize_t { + if __ccgo_strace { + trc("t=%v sockfd=%v buf=%v len=%v flags=%v src_addr=%v addrlen=%v, (%v:)", t, sockfd, buf, len, flags, src_addr, addrlen, origin(2)) + } + panic(todo("")) +} + +// void srand48(long int seedval); +func Xsrand48(t *TLS, seedval long) { + if __ccgo_strace { + trc("t=%v seedval=%v, (%v:)", t, seedval, origin(2)) + } + panic(todo("")) +} + +// long int lrand48(void); +func Xlrand48(t *TLS) long { + if __ccgo_strace { + trc("t=%v, (%v:)", t, origin(2)) + } + panic(todo("")) +} + +// ssize_t sendmsg(int sockfd, const struct msghdr *msg, int flags); +func Xsendmsg(t *TLS, sockfd int32, msg uintptr, flags int32) types.Ssize_t { + if __ccgo_strace { + trc("t=%v sockfd=%v msg=%v flags=%v, (%v:)", t, sockfd, msg, flags, origin(2)) + } + panic(todo("")) +} + +// int poll(struct pollfd *fds, nfds_t nfds, int timeout); +func Xpoll(t *TLS, fds uintptr, nfds poll.Nfds_t, timeout int32) int32 { + if __ccgo_strace { + trc("t=%v fds=%v nfds=%v timeout=%v, (%v:)", t, fds, nfds, timeout, origin(2)) + } + if nfds == 0 { + panic(todo("")) + } + + // if dmesgs { + // dmesg("%v: %#x %v %v, %+v", origin(1), fds, nfds, timeout, (*[1000]unix.PollFd)(unsafe.Pointer(fds))[:nfds:nfds]) + // } + n, err := unix.Poll((*[1000]unix.PollFd)(unsafe.Pointer(fds))[:nfds:nfds], int(timeout)) + // if dmesgs { + // dmesg("%v: %v %v", origin(1), n, err) + // } + if err != nil { + t.setErrno(err) + return -1 + } + + return int32(n) +} + +// struct cmsghdr *CMSG_NXTHDR(struct msghdr *msgh, struct cmsghdr *cmsg); +func X__cmsg_nxthdr(t *TLS, msgh, cmsg uintptr) uintptr { + if __ccgo_strace { + trc("t=%v cmsg=%v, (%v:)", t, cmsg, origin(2)) + } + panic(todo("")) +} + +// wchar_t *wcschr(const wchar_t *wcs, wchar_t wc); +func Xwcschr(t *TLS, wcs uintptr, wc wchar_t) wchar_t { + if __ccgo_strace { + trc("t=%v wcs=%v wc=%v, (%v:)", t, wcs, wc, origin(2)) + } + panic(todo("")) +} + +// gid_t getegid(void); +func Xgetegid(t *TLS) types.Gid_t { + if __ccgo_strace { + trc("t=%v, (%v:)", t, origin(2)) + } + panic(todo("")) +} + +// gid_t getgid(void); +func Xgetgid(t *TLS) types.Gid_t { + if __ccgo_strace { + trc("t=%v, (%v:)", t, origin(2)) + } + panic(todo("")) +} + +// void *shmat(int shmid, const void *shmaddr, int shmflg); +func Xshmat(t *TLS, shmid int32, shmaddr uintptr, shmflg int32) uintptr { + if __ccgo_strace { + trc("t=%v shmid=%v shmaddr=%v shmflg=%v, (%v:)", t, shmid, shmaddr, shmflg, origin(2)) + } + panic(todo("")) +} + +// int shmctl(int shmid, int cmd, struct shmid_ds *buf); +func Xshmctl(t *TLS, shmid, cmd int32, buf uintptr) int32 { + if __ccgo_strace { + trc("t=%v cmd=%v buf=%v, (%v:)", t, cmd, buf, origin(2)) + } + panic(todo("")) +} + +// int shmdt(const void *shmaddr); +func Xshmdt(t *TLS, shmaddr uintptr) int32 { + if __ccgo_strace { + trc("t=%v shmaddr=%v, (%v:)", t, shmaddr, origin(2)) + } + panic(todo("")) +} + +// int getresuid(uid_t *ruid, uid_t *euid, uid_t *suid); +func Xgetresuid(t *TLS, ruid, euid, suid uintptr) int32 { + if __ccgo_strace { + trc("t=%v suid=%v, (%v:)", t, suid, origin(2)) + } + panic(todo("")) +} + +// int getresgid(gid_t *rgid, gid_t *egid, gid_t *sgid); +func Xgetresgid(t *TLS, rgid, egid, sgid uintptr) int32 { + if __ccgo_strace { + trc("t=%v sgid=%v, (%v:)", t, sgid, origin(2)) + } + panic(todo("")) +} + +// FILE *tmpfile(void); +func Xtmpfile(t *TLS) uintptr { + if __ccgo_strace { + trc("t=%v, (%v:)", t, origin(2)) + } + f, err := os.CreateTemp("", "tmpfile-") + if err != nil { + t.setErrno(err) + return 0 + } + + cf := newFile(t, int32(f.Fd())) + AtExit(func() { + nm := f.Name() + file(cf).close(t) + os.Remove(nm) + }) + + return cf +} + +// FILE *fdopen(int fd, const char *mode); +func Xfdopen(t *TLS, fd int32, mode uintptr) uintptr { + if __ccgo_strace { + trc("t=%v fd=%v mode=%v, (%v:)", t, fd, GoString(mode), origin(2)) + } + m := strings.ReplaceAll(GoString(mode), "b", "") + switch m { + case + "a", + "a+", + "r", + "r+", + "w", + "w+": + default: + t.setErrno(errno.EINVAL) + return 0 + } + + p := newFile(t, fd) + if p == 0 { + t.setErrno(errno.EINVAL) + return 0 + } + return p +} + +// struct passwd *getpwnam(const char *name); +func Xgetpwnam(t *TLS, name uintptr) uintptr { + if __ccgo_strace { + trc("t=%v name=%v, (%v:)", t, name, origin(2)) + } + f, err := os.Open("/etc/passwd") + if err != nil { + panic(todo("", err)) + } + + defer f.Close() + + sname := GoString(name) + sc := bufio.NewScanner(f) + for sc.Scan() { + s := strings.TrimSpace(sc.Text()) + if s == "" || strings.HasPrefix(s, "#") { + continue + } + + // eg. "root:x:0:0:root:/root:/bin/bash" + a := strings.Split(s, ":") + if len(a) < 7 { + panic(todo("")) + } + + if a[0] == sname { + uid, err := strconv.Atoi(a[2]) + if err != nil { + panic(todo("")) + } + + gid, err := strconv.Atoi(a[3]) + if err != nil { + panic(todo("")) + } + + closePasswd(&staticGetpwnam) + gecos := a[4] + if strings.Contains(gecos, ",") { + a := strings.Split(gecos, ",") + gecos = a[0] + } + initPasswd(t, &staticGetpwnam, a[0], a[1], uint32(uid), uint32(gid), gecos, a[5], a[6]) + return uintptr(unsafe.Pointer(&staticGetpwnam)) + } + } + + if sc.Err() != nil { + panic(todo("")) + } + + return 0 +} + +// int getpwnam_r(char *name, struct passwd *pwd, char *buf, size_t buflen, struct passwd **result); +func Xgetpwnam_r(t *TLS, name, cpwd, buf uintptr, buflen types.Size_t, result uintptr) int32 { + if __ccgo_strace { + trc("t=%v buf=%v buflen=%v result=%v, (%v:)", t, buf, buflen, result, origin(2)) + } + f, err := os.Open("/etc/passwd") + if err != nil { + panic(todo("", err)) + } + + defer f.Close() + + sname := GoString(name) + sc := bufio.NewScanner(f) + for sc.Scan() { + s := strings.TrimSpace(sc.Text()) + if s == "" || strings.HasPrefix(s, "#") { + continue + } + + // eg. "root:x:0:0:root:/root:/bin/bash" + a := strings.Split(s, ":") + if len(a) < 7 { + panic(todo("%q", s)) + } + + if a[0] == sname { + uid, err := strconv.Atoi(a[2]) + if err != nil { + panic(todo("")) + } + + gid, err := strconv.Atoi(a[3]) + if err != nil { + panic(todo("")) + } + + gecos := a[4] + if strings.Contains(gecos, ",") { + a := strings.Split(gecos, ",") + gecos = a[0] + } + var v pwd.Passwd + if initPasswd2(t, buf, buflen, &v, a[0], a[1], uint32(uid), uint32(gid), gecos, a[5], a[6]) { + *(*pwd.Passwd)(unsafe.Pointer(cpwd)) = v + *(*uintptr)(unsafe.Pointer(result)) = cpwd + return 0 + } + + *(*uintptr)(unsafe.Pointer(result)) = 0 + return errno.ERANGE + } + } + + if sc.Err() != nil { + panic(todo("")) + } + + *(*uintptr)(unsafe.Pointer(result)) = 0 + return 0 +} + +func init() { + atExit = append(atExit, func() { closeGroup(&staticGetgrgid) }) +} + +var staticGetgrgid grp.Group + +// struct group *getgrgid(gid_t gid); +func Xgetgrgid(t *TLS, gid uint32) uintptr { + if __ccgo_strace { + trc("t=%v gid=%v, (%v:)", t, gid, origin(2)) + } + f, err := os.Open("/etc/group") + if err != nil { + panic(todo("")) + } + + defer f.Close() + + sid := strconv.Itoa(int(gid)) + sc := bufio.NewScanner(f) + for sc.Scan() { + s := strings.TrimSpace(sc.Text()) + if s == "" || strings.HasPrefix(s, "#") { + continue + } + + // eg. "root:x:0:" + a := strings.Split(s, ":") + if len(a) < 4 { + panic(todo("%q", s)) + } + + if a[2] == sid { + closeGroup(&staticGetgrgid) + var names []string + if a[3] != "" { + names = strings.Split(a[3], ",") + } + initGroup(t, &staticGetgrgid, a[0], a[1], gid, names) + return uintptr(unsafe.Pointer(&staticGetgrgid)) + } + } + + if sc.Err() != nil { + panic(todo("")) + } + + return 0 +} + +// int getgrgid_r(gid_t gid, struct group *grp, char *buf, size_t buflen, struct group **result); +func Xgetgrgid_r(t *TLS, gid uint32, pGrp, buf uintptr, buflen types.Size_t, result uintptr) int32 { + if __ccgo_strace { + trc("t=%v gid=%v buf=%v buflen=%v result=%v, (%v:)", t, gid, buf, buflen, result, origin(2)) + } + f, err := os.Open("/etc/group") + if err != nil { + panic(todo("")) + } + + defer f.Close() + + sid := strconv.Itoa(int(gid)) + sc := bufio.NewScanner(f) + for sc.Scan() { + s := strings.TrimSpace(sc.Text()) + if s == "" || strings.HasPrefix(s, "#") { + continue + } + + // eg. "root:x:0:" + a := strings.Split(s, ":") + if len(a) < 4 { + panic(todo("%q", s)) + } + + if a[2] == sid { + var names []string + if a[3] != "" { + names = strings.Split(a[3], ",") + } + var x grp.Group + if initGroup2(buf, buflen, &x, a[0], a[1], gid, names) { + *(*grp.Group)(unsafe.Pointer(pGrp)) = x + *(*uintptr)(unsafe.Pointer(result)) = pGrp + return 0 + } + + *(*uintptr)(unsafe.Pointer(result)) = 0 + return 0 + } + } + + if sc.Err() != nil { + panic(todo("")) + } + + *(*uintptr)(unsafe.Pointer(result)) = 0 + return 0 +} + +func initPasswd2(t *TLS, buf uintptr, buflen types.Size_t, p *pwd.Passwd, name, pwd string, uid, gid uint32, gecos, dir, shell string) bool { + p.Fpw_name, buf, buflen = bufString(buf, buflen, name) + if buf == 0 { + return false + } + + p.Fpw_passwd, buf, buflen = bufString(buf, buflen, pwd) + if buf == 0 { + return false + } + + p.Fpw_uid = uid + p.Fpw_gid = gid + if buf == 0 { + return false + } + + p.Fpw_gecos, buf, buflen = bufString(buf, buflen, gecos) + if buf == 0 { + return false + } + + p.Fpw_dir, buf, buflen = bufString(buf, buflen, dir) + if buf == 0 { + return false + } + + p.Fpw_shell, buf, buflen = bufString(buf, buflen, shell) + return buf != 0 +} + +func bufString(buf uintptr, buflen types.Size_t, s string) (uintptr, uintptr, types.Size_t) { + buf0 := buf + rq := len(s) + 1 + if rq > int(buflen) { + return 0, 0, 0 + } + + copy((*RawMem)(unsafe.Pointer(buf))[:len(s):len(s)], s) + buf += uintptr(len(s)) + *(*byte)(unsafe.Pointer(buf)) = 0 + return buf0, buf + 1, buflen - types.Size_t(rq) +} + +func closeGroup(p *grp.Group) { + Xfree(nil, p.Fgr_name) + Xfree(nil, p.Fgr_passwd) + if p := p.Fgr_mem; p != 0 { + for { + q := *(*uintptr)(unsafe.Pointer(p)) + if q == 0 { + break + } + + Xfree(nil, q) + p += unsafe.Sizeof(uintptr(0)) + } + } + *p = grp.Group{} +} + +func initGroup(t *TLS, p *grp.Group, name, pwd string, gid uint32, names []string) { + p.Fgr_name = cString(t, name) + p.Fgr_passwd = cString(t, pwd) + p.Fgr_gid = gid + a := Xcalloc(t, 1, types.Size_t(unsafe.Sizeof(uintptr(0)))*types.Size_t((len(names)+1))) + if a == 0 { + panic("OOM") + } + + for p := a; len(names) != 0; p += unsafe.Sizeof(uintptr(0)) { + *(*uintptr)(unsafe.Pointer(p)) = cString(t, names[0]) + names = names[1:] + } + p.Fgr_mem = a +} + +func initGroup2(buf uintptr, buflen types.Size_t, p *grp.Group, name, pwd string, gid uint32, names []string) bool { + p.Fgr_name, buf, buflen = bufString(buf, buflen, name) + if buf == 0 { + return false + } + + p.Fgr_passwd, buf, buflen = bufString(buf, buflen, pwd) + if buf == 0 { + return false + } + + p.Fgr_gid = gid + rq := unsafe.Sizeof(uintptr(0)) * uintptr(len(names)+1) + if rq > uintptr(buflen) { + return false + } + + a := buf + buf += rq + for ; len(names) != 0; buf += unsafe.Sizeof(uintptr(0)) { + if len(names[0])+1 > int(buflen) { + return false + } + + *(*uintptr)(unsafe.Pointer(buf)), buf, buflen = bufString(buf, buflen, names[0]) + names = names[1:] + } + *(*uintptr)(unsafe.Pointer(buf)) = 0 + p.Fgr_mem = a + return true +} + +func init() { + atExit = append(atExit, func() { closeGroup(&staticGetgrgid) }) +} + +var staticGetpwuid pwd.Passwd + +func init() { + atExit = append(atExit, func() { closePasswd(&staticGetpwuid) }) +} + +func closePasswd(p *pwd.Passwd) { + Xfree(nil, p.Fpw_name) + Xfree(nil, p.Fpw_passwd) + Xfree(nil, p.Fpw_gecos) + Xfree(nil, p.Fpw_dir) + Xfree(nil, p.Fpw_shell) + *p = pwd.Passwd{} +} + +var staticGetgrnam grp.Group + +func init() { + atExit = append(atExit, func() { closeGroup(&staticGetgrnam) }) +} + +// struct passwd *getpwuid(uid_t uid); +func Xgetpwuid(t *TLS, uid uint32) uintptr { + if __ccgo_strace { + trc("t=%v uid=%v, (%v:)", t, uid, origin(2)) + } + f, err := os.Open("/etc/passwd") + if err != nil { + panic(todo("", err)) + } + + defer f.Close() + + sid := strconv.Itoa(int(uid)) + sc := bufio.NewScanner(f) + for sc.Scan() { + s := strings.TrimSpace(sc.Text()) + if len(s) == 0 || strings.HasPrefix(s, "#") { + continue + } + + // eg. "root:x:0:0:root:/root:/bin/bash" + a := strings.Split(s, ":") + if len(a) < 7 { + panic(todo("%q", s)) + } + + if a[2] == sid { + uid, err := strconv.Atoi(a[2]) + if err != nil { + panic(todo("")) + } + + gid, err := strconv.Atoi(a[3]) + if err != nil { + panic(todo("")) + } + + closePasswd(&staticGetpwuid) + gecos := a[4] + if strings.Contains(gecos, ",") { + a := strings.Split(gecos, ",") + gecos = a[0] + } + initPasswd(t, &staticGetpwuid, a[0], a[1], uint32(uid), uint32(gid), gecos, a[5], a[6]) + return uintptr(unsafe.Pointer(&staticGetpwuid)) + } + } + + if sc.Err() != nil { + panic(todo("")) + } + + return 0 +} + +func initPasswd(t *TLS, p *pwd.Passwd, name, pwd string, uid, gid uint32, gecos, dir, shell string) { + p.Fpw_name = cString(t, name) + p.Fpw_passwd = cString(t, pwd) + p.Fpw_uid = uid + p.Fpw_gid = gid + p.Fpw_gecos = cString(t, gecos) + p.Fpw_dir = cString(t, dir) + p.Fpw_shell = cString(t, shell) +} + +// struct group *getgrnam(const char *name); +func Xgetgrnam(t *TLS, name uintptr) uintptr { + if __ccgo_strace { + trc("t=%v name=%v, (%v:)", t, name, origin(2)) + } + f, err := os.Open("/etc/group") + if err != nil { + panic(todo("")) + } + + defer f.Close() + + sname := GoString(name) + sc := bufio.NewScanner(f) + for sc.Scan() { + s := strings.TrimSpace(sc.Text()) + if len(s) == 0 || strings.HasPrefix(s, "#") { + continue + } + + // eg. "root:x:0:" + a := strings.Split(s, ":") + if len(a) < 4 { + panic(todo("%q", s)) + } + + if a[0] == sname { + closeGroup(&staticGetgrnam) + gid, err := strconv.Atoi(a[2]) + if err != nil { + panic(todo("")) + } + + var names []string + if a[3] != "" { + names = strings.Split(a[3], ",") + } + initGroup(t, &staticGetgrnam, a[0], a[1], uint32(gid), names) + return uintptr(unsafe.Pointer(&staticGetgrnam)) + } + } + + if sc.Err() != nil { + panic(todo("")) + } + + return 0 +} + +// int getgrnam_r(const char *name, struct group *grp, char *buf, size_t buflen, struct group **result); +func Xgetgrnam_r(t *TLS, name, pGrp, buf uintptr, buflen types.Size_t, result uintptr) int32 { + if __ccgo_strace { + trc("t=%v buf=%v buflen=%v result=%v, (%v:)", t, buf, buflen, result, origin(2)) + } + f, err := os.Open("/etc/group") + if err != nil { + panic(todo("")) + } + + defer f.Close() + + sname := GoString(name) + sc := bufio.NewScanner(f) + for sc.Scan() { + s := strings.TrimSpace(sc.Text()) + if len(s) == 0 || strings.HasPrefix(s, "#") { + continue + } + + // eg. "root:x:0:" + a := strings.Split(s, ":") + if len(a) < 4 { + panic(todo("%q", s)) + } + + if a[0] == sname { + gid, err := strconv.Atoi(a[2]) + if err != nil { + panic(todo("")) + } + + var names []string + if a[3] != "" { + names = strings.Split(a[3], ",") + } + var x grp.Group + if initGroup2(buf, buflen, &x, a[0], a[1], uint32(gid), names) { + *(*grp.Group)(unsafe.Pointer(pGrp)) = x + *(*uintptr)(unsafe.Pointer(result)) = pGrp + return 0 + } + + *(*uintptr)(unsafe.Pointer(result)) = 0 + return 0 + } + } + + if sc.Err() != nil { + panic(todo("")) + } + + *(*uintptr)(unsafe.Pointer(result)) = 0 + return 0 +} + +// int getpwuid_r(uid_t uid, struct passwd *pwd, char *buf, size_t buflen, struct passwd **result); +func Xgetpwuid_r(t *TLS, uid types.Uid_t, cpwd, buf uintptr, buflen types.Size_t, result uintptr) int32 { + if __ccgo_strace { + trc("t=%v uid=%v buf=%v buflen=%v result=%v, (%v:)", t, uid, buf, buflen, result, origin(2)) + } + f, err := os.Open("/etc/passwd") + if err != nil { + panic(todo("", err)) + } + + defer f.Close() + + sid := strconv.Itoa(int(uid)) + sc := bufio.NewScanner(f) + for sc.Scan() { + s := strings.TrimSpace(sc.Text()) + if len(s) == 0 || strings.HasPrefix(s, "#") { + continue + } + + // eg. "root:x:0:0:root:/root:/bin/bash" + a := strings.Split(s, ":") + if len(a) < 7 { + panic(todo("%q", s)) + } + + if a[2] == sid { + uid, err := strconv.Atoi(a[2]) + if err != nil { + panic(todo("")) + } + + gid, err := strconv.Atoi(a[3]) + if err != nil { + panic(todo("")) + } + + gecos := a[4] + if strings.Contains(gecos, ",") { + a := strings.Split(gecos, ",") + gecos = a[0] + } + var v pwd.Passwd + if initPasswd2(t, buf, buflen, &v, a[0], a[1], uint32(uid), uint32(gid), gecos, a[5], a[6]) { + *(*pwd.Passwd)(unsafe.Pointer(cpwd)) = v + *(*uintptr)(unsafe.Pointer(result)) = cpwd + return 0 + } + + *(*uintptr)(unsafe.Pointer(result)) = 0 + return errno.ERANGE + } + } + + if sc.Err() != nil { + panic(todo("")) + } + + *(*uintptr)(unsafe.Pointer(result)) = 0 + return 0 +} + +// int mkostemp(char *template, int flags); +func Xmkostemp(t *TLS, template uintptr, flags int32) int32 { + if __ccgo_strace { + trc("t=%v template=%v flags=%v, (%v:)", t, template, flags, origin(2)) + } + len := uintptr(Xstrlen(t, template)) + x := template + uintptr(len-6) + for i := uintptr(0); i < 6; i++ { + if *(*byte)(unsafe.Pointer(x + i)) != 'X' { + t.setErrno(errno.EINVAL) + return -1 + } + } + + fd, err := tempFile(template, x, flags) + if err != nil { + t.setErrno(err) + return -1 + } + + return int32(fd) +} + +// void uuid_generate_random(uuid_t out); +func Xuuid_generate_random(t *TLS, out uintptr) { + if __ccgo_strace { + trc("t=%v out=%v, (%v:)", t, out, origin(2)) + } + x := guuid.New() + copy((*RawMem)(unsafe.Pointer(out))[:], x[:]) +} + +// void uuid_unparse(uuid_t uu, char *out); +func Xuuid_unparse(t *TLS, uu, out uintptr) { + if __ccgo_strace { + trc("t=%v out=%v, (%v:)", t, out, origin(2)) + } + s := (*guuid.UUID)(unsafe.Pointer(uu)).String() + copy((*RawMem)(unsafe.Pointer(out))[:], s) + *(*byte)(unsafe.Pointer(out + uintptr(len(s)))) = 0 +} + +// no longer used? +// var staticRandomData = &rand.Rand{} + +// char *initstate(unsigned seed, char *state, size_t size); +func Xinitstate(t *TLS, seed uint32, statebuf uintptr, statelen types.Size_t) uintptr { + if __ccgo_strace { + trc("t=%v seed=%v statebuf=%v statelen=%v, (%v:)", t, seed, statebuf, statelen, origin(2)) + } + // staticRandomData = rand.New(rand.NewSource(int64(seed))) + _ = rand.New(rand.NewSource(int64(seed))) + return 0 +} + +// char *setstate(const char *state); +func Xsetstate(t *TLS, state uintptr) uintptr { + if __ccgo_strace { + trc("t=%v state=%v, (%v:)", t, state, origin(2)) + } + t.setErrno(errno.EINVAL) //TODO + return 0 +} + +// The initstate_r() function is like initstate(3) except that it initializes +// the state in the object pointed to by buf, rather than initializing the +// global state variable. Before calling this function, the buf.state field +// must be initialized to NULL. The initstate_r() function records a pointer +// to the statebuf argument inside the structure pointed to by buf. Thus, +// state‐ buf should not be deallocated so long as buf is still in use. (So, +// statebuf should typically be allocated as a static variable, or allocated on +// the heap using malloc(3) or similar.) +// +// char *initstate_r(unsigned int seed, char *statebuf, size_t statelen, struct random_data *buf); +func Xinitstate_r(t *TLS, seed uint32, statebuf uintptr, statelen types.Size_t, buf uintptr) int32 { + if __ccgo_strace { + trc("t=%v seed=%v statebuf=%v statelen=%v buf=%v, (%v:)", t, seed, statebuf, statelen, buf, origin(2)) + } + if buf == 0 { + panic(todo("")) + } + + randomDataMu.Lock() + + defer randomDataMu.Unlock() + + randomData[buf] = rand.New(rand.NewSource(int64(seed))) + return 0 +} + +var ( + randomData = map[uintptr]*rand.Rand{} + randomDataMu sync.Mutex +) + +// int mkstemps(char *template, int suffixlen); +func Xmkstemps(t *TLS, template uintptr, suffixlen int32) int32 { + if __ccgo_strace { + trc("t=%v template=%v suffixlen=%v, (%v:)", t, template, suffixlen, origin(2)) + } + return Xmkstemps64(t, template, suffixlen) +} + +// int mkstemps(char *template, int suffixlen); +func Xmkstemps64(t *TLS, template uintptr, suffixlen int32) int32 { + if __ccgo_strace { + trc("t=%v template=%v suffixlen=%v, (%v:)", t, template, suffixlen, origin(2)) + } + len := uintptr(Xstrlen(t, template)) + x := template + uintptr(len-6) - uintptr(suffixlen) + for i := uintptr(0); i < 6; i++ { + if *(*byte)(unsafe.Pointer(x + i)) != 'X' { + t.setErrno(errno.EINVAL) + return -1 + } + } + + fd, err := tempFile(template, x, 0) + if err != nil { + t.setErrno(err) + return -1 + } + + return int32(fd) +} + +// int mkstemp(char *template); +func Xmkstemp(t *TLS, template uintptr) int32 { + if __ccgo_strace { + trc("t=%v template=%v, (%v:)", t, template, origin(2)) + } + return Xmkstemp64(t, template) +} + +// int mkstemp(char *template); +func Xmkstemp64(t *TLS, template uintptr) int32 { + if __ccgo_strace { + trc("t=%v template=%v, (%v:)", t, template, origin(2)) + } + return Xmkstemps64(t, template, 0) +} + +// int random_r(struct random_data *buf, int32_t *result); +func Xrandom_r(t *TLS, buf, result uintptr) int32 { + if __ccgo_strace { + trc("t=%v result=%v, (%v:)", t, result, origin(2)) + } + randomDataMu.Lock() + + defer randomDataMu.Unlock() + + mr := randomData[buf] + if stdlib.RAND_MAX != math.MaxInt32 { + panic(todo("")) + } + *(*int32)(unsafe.Pointer(result)) = mr.Int31() + return 0 +} + +// int strerror_r(int errnum, char *buf, size_t buflen); +func Xstrerror_r(t *TLS, errnum int32, buf uintptr, buflen size_t) int32 { + if __ccgo_strace { + trc("t=%v errnum=%v buf=%v buflen=%v, (%v:)", t, errnum, buf, buflen, origin(2)) + } + panic(todo("")) +} + +// void endpwent(void); +func Xendpwent(t *TLS) { + if __ccgo_strace { + trc("t=%v, (%v:)", t, origin(2)) + } + // nop +} + +var ctimeStaticBuf [32]byte + +// char *ctime(const time_t *timep); +func Xctime(t *TLS, timep uintptr) uintptr { + if __ccgo_strace { + trc("t=%v timep=%v, (%v:)", t, timep, origin(2)) + } + return Xctime_r(t, timep, uintptr(unsafe.Pointer(&ctimeStaticBuf[0]))) +} + +// char *ctime_r(const time_t *timep, char *buf); +func Xctime_r(t *TLS, timep, buf uintptr) uintptr { + if __ccgo_strace { + trc("t=%v buf=%v, (%v:)", t, buf, origin(2)) + } + ut := *(*ctime.Time_t)(unsafe.Pointer(timep)) + tm := time.Unix(int64(ut), 0).Local() + s := tm.Format(time.ANSIC) + "\n\x00" + copy((*RawMem)(unsafe.Pointer(buf))[:26:26], s) + return buf +} + +// ssize_t pread(int fd, void *buf, size_t count, off_t offset); +func Xpread(t *TLS, fd int32, buf uintptr, count types.Size_t, offset types.Off_t) types.Ssize_t { + if __ccgo_strace { + trc("t=%v fd=%v buf=%v count=%v offset=%v, (%v:)", t, fd, buf, count, offset, origin(2)) + } + var n int + var err error + switch { + case count == 0: + n, err = unix.Pread(int(fd), nil, int64(offset)) + default: + n, err = unix.Pread(int(fd), (*RawMem)(unsafe.Pointer(buf))[:count:count], int64(offset)) + // if dmesgs && err == nil { + // dmesg("%v: fd %v, off %#x, count %#x, n %#x\n%s", origin(1), fd, offset, count, n, hex.Dump((*RawMem)(unsafe.Pointer(buf))[:n:n])) + // } + } + if err != nil { + // if dmesgs { + // dmesg("%v: %v FAIL", origin(1), err) + // } + t.setErrno(err) + return -1 + } + + // if dmesgs { + // dmesg("%v: ok", origin(1)) + // } + return types.Ssize_t(n) +} + +// // malloc_zone_t * malloc_create_zone(vm_size_t start_size, unsigned flags); +// func Xmalloc_create_zone(t *TLS, start_size types.Size_t, flags uint32) uintptr { +// if __ccgo_strace { +// trc("t=%v start_size=%v flags=%v, (%v:)", t, start_size, flags, origin(2)) +// } +// panic(todo("")) +// } +// +// // void * malloc_zone_malloc(malloc_zone_t *zone, size_t size); +// func Xmalloc_zone_malloc(t *TLS, zone uintptr, size types.Size_t) uintptr { +// if __ccgo_strace { +// trc("t=%v zone=%v size=%v, (%v:)", t, zone, size, origin(2)) +// } +// if zone == defaultZone { +// return Xmalloc(t, size) +// } +// +// panic(todo("")) +// } +// +// // malloc_zone_t * malloc_default_zone(void); +// func Xmalloc_default_zone(t *TLS) uintptr { +// if __ccgo_strace { +// trc("t=%v (%v:)", t, origin(2)) +// } +// return defaultZone +// } +// +// // void malloc_zone_free(malloc_zone_t *zone, void *ptr); +// func Xmalloc_zone_free(t *TLS, zone, ptr uintptr) { +// if __ccgo_strace { +// trc("t=%v zone=%v ptr=%v, (%v:)", t, zone, ptr, origin(2)) +// } +// +// if zone == defaultZone { +// Xfree(t, ptr) +// return +// } +// +// panic(todo("")) +// } +// +// // void * malloc_zone_realloc(malloc_zone_t *zone, void *ptr, size_t size); +// func Xmalloc_zone_realloc(t *TLS, zone, ptr uintptr, size types.Size_t) uintptr { +// if __ccgo_strace { +// trc("t=%v zone=%v ptr=%v size=%v, (%v:)", t, zone, ptr, size, origin(2)) +// } +// panic(todo("")) +// } + +// int sysctlbyname(const char *name, void *oldp, size_t *oldlenp, void *newp, size_t newlen); +func Xsysctlbyname(t *TLS, name, oldp, oldlenp, newp uintptr, newlen types.Size_t) int32 { + if __ccgo_strace { + trc("t=%v name=%q oldp=%#0x oldlenp=%v newp=%v newlen=%v, (%v:)", t, GoString(name), oldp, *(*types.Size_t)(unsafe.Pointer(oldlenp)), newp, newlen, origin(2)) + } + oldlen := *(*types.Size_t)(unsafe.Pointer(oldlenp)) + switch GoString(name) { + case "hw.ncpu": + if oldlen != 4 { + panic(todo("")) + } + + *(*int32)(unsafe.Pointer(oldp)) = int32(runtime.GOMAXPROCS(-1)) + return 0 + default: + t.setErrno(errno.ENOENT) + return -1 + } +} + +// type mallocZone struct { +// a memory.Allocator +// mu sync.Mutex +// +// isDefault bool +// } +// +// func newMallocZone(isDefault bool) *mallocZone { +// return &mallocZone{isDefault: isDefault} +// } +// +// var ( +// defaultZone uintptr +// ) +// +// func init() { +// defaultZone = addObject(newMallocZone(true)) +// } + +// /tmp/libc/musl-master/src/time/gmtime.c:6:19: +var _tm ctime.Tm + +// /tmp/libc/musl-master/src/time/gmtime.c:4:11: +func Xgmtime(tls *TLS, t uintptr) (r uintptr) { // /tmp/libc/musl-master/src/time/gmtime.c:7:2: + if __ccgo_strace { + trc("tls=%v t=%v, (%v:)", tls, t, origin(2)) + defer func() { trc("-> %v", r) }() + } + return Xgmtime_r(tls, t, uintptr(unsafe.Pointer(&_tm))) +} + +var _days_in_month = [12]int8{ + 0: int8(31), + 1: int8(30), + 2: int8(31), + 3: int8(30), + 4: int8(31), + 5: int8(31), + 6: int8(30), + 7: int8(31), + 8: int8(30), + 9: int8(31), + 10: int8(31), + 11: int8(29), +} + +var x___utc = [4]int8{'U', 'T', 'C'} + +func Xstrftime(tls *TLS, s uintptr, n size_t, f uintptr, tm uintptr) (r size_t) { + if __ccgo_strace { + trc("tls=%v s=%v n=%v f=%v tm=%v, (%v:)", tls, s, n, f, tm, origin(2)) + defer func() { trc("-> %v", r) }() + } + tt := time.Date( + int((*ctime.Tm)(unsafe.Pointer(tm)).Ftm_year+1900), + time.Month((*ctime.Tm)(unsafe.Pointer(tm)).Ftm_mon+1), + int((*ctime.Tm)(unsafe.Pointer(tm)).Ftm_mday), + int((*ctime.Tm)(unsafe.Pointer(tm)).Ftm_hour), + int((*ctime.Tm)(unsafe.Pointer(tm)).Ftm_min), + int((*ctime.Tm)(unsafe.Pointer(tm)).Ftm_sec), + 0, + time.UTC, + ) + fmt := GoString(f) + var result string + if fmt != "" { + result = strftime.Format(fmt, tt) + } + switch r = size_t(len(result)); { + case r > n: + r = 0 + default: + copy((*RawMem)(unsafe.Pointer(s))[:r:r], result) + *(*byte)(unsafe.Pointer(s + uintptr(r))) = 0 + } + return r + +} + +func Xgmtime_r(tls *TLS, t uintptr, tm uintptr) (r uintptr) { + if __ccgo_strace { + trc("tls=%v t=%v tm=%v, (%v:)", tls, t, tm, origin(2)) + defer func() { trc("-> %v", r) }() + } + if x___secs_to_tm(tls, int64(*(*time_t)(unsafe.Pointer(t))), tm) < 0 { + *(*int32)(unsafe.Pointer(X__errno_location(tls))) = int32(errno.EOVERFLOW) + return uintptr(0) + } + (*ctime.Tm)(unsafe.Pointer(tm)).Ftm_isdst = 0 + (*ctime.Tm)(unsafe.Pointer(tm)).Ftm_gmtoff = 0 + (*ctime.Tm)(unsafe.Pointer(tm)).Ftm_zone = uintptr(unsafe.Pointer(&x___utc)) + return tm +} + +func x___secs_to_tm(tls *TLS, t int64, tm uintptr) (r int32) { + var c_cycles, leap, months, q_cycles, qc_cycles, remdays, remsecs, remyears, wday, yday int32 + var days, secs, years int64 + _, _, _, _, _, _, _, _, _, _, _, _, _ = c_cycles, days, leap, months, q_cycles, qc_cycles, remdays, remsecs, remyears, secs, wday, yday, years + /* Reject time_t values whose year would overflow int */ + if t < int64(-Int32FromInt32(1)-Int32FromInt32(0x7fffffff))*Int64FromInt64(31622400) || t > Int64FromInt32(limits.INT_MAX)*Int64FromInt64(31622400) { + return -int32(1) + } + secs = t - (Int64FromInt64(946684800) + int64(Int32FromInt32(86400)*(Int32FromInt32(31)+Int32FromInt32(29)))) + days = secs / int64(86400) + remsecs = int32(secs % int64(86400)) + if remsecs < 0 { + remsecs += int32(86400) + days-- + } + wday = int32((int64(3) + days) % int64(7)) + if wday < 0 { + wday += int32(7) + } + qc_cycles = int32(days / int64(Int32FromInt32(365)*Int32FromInt32(400)+Int32FromInt32(97))) + remdays = int32(days % int64(Int32FromInt32(365)*Int32FromInt32(400)+Int32FromInt32(97))) + if remdays < 0 { + remdays += Int32FromInt32(365)*Int32FromInt32(400) + Int32FromInt32(97) + qc_cycles-- + } + c_cycles = remdays / (Int32FromInt32(365)*Int32FromInt32(100) + Int32FromInt32(24)) + if c_cycles == int32(4) { + c_cycles-- + } + remdays -= c_cycles * (Int32FromInt32(365)*Int32FromInt32(100) + Int32FromInt32(24)) + q_cycles = remdays / (Int32FromInt32(365)*Int32FromInt32(4) + Int32FromInt32(1)) + if q_cycles == int32(25) { + q_cycles-- + } + remdays -= q_cycles * (Int32FromInt32(365)*Int32FromInt32(4) + Int32FromInt32(1)) + remyears = remdays / int32(365) + if remyears == int32(4) { + remyears-- + } + remdays -= remyears * int32(365) + leap = BoolInt32(!(remyears != 0) && (q_cycles != 0 || !(c_cycles != 0))) + yday = remdays + int32(31) + int32(28) + leap + if yday >= int32(365)+leap { + yday -= int32(365) + leap + } + years = int64(remyears+int32(4)*q_cycles+int32(100)*c_cycles) + int64(400)*int64(int64(qc_cycles)) + months = 0 + for { + if !(int32(_days_in_month[months]) <= remdays) { + break + } + remdays -= int32(_days_in_month[months]) + goto _1 + _1: + months++ + } + if months >= int32(10) { + months -= int32(12) + years++ + } + if years+int64(100) > int64(limits.INT_MAX) || years+int64(100) < int64(-Int32FromInt32(1)-Int32FromInt32(0x7fffffff)) { + return -int32(1) + } + (*ctime.Tm)(unsafe.Pointer(tm)).Ftm_year = int32(years + int64(100)) + (*ctime.Tm)(unsafe.Pointer(tm)).Ftm_mon = months + int32(2) + (*ctime.Tm)(unsafe.Pointer(tm)).Ftm_mday = remdays + int32(1) + (*ctime.Tm)(unsafe.Pointer(tm)).Ftm_wday = wday + (*ctime.Tm)(unsafe.Pointer(tm)).Ftm_yday = yday + (*ctime.Tm)(unsafe.Pointer(tm)).Ftm_hour = remsecs / int32(3600) + (*ctime.Tm)(unsafe.Pointer(tm)).Ftm_min = remsecs / int32(60) % int32(60) + (*ctime.Tm)(unsafe.Pointer(tm)).Ftm_sec = remsecs % int32(60) + return 0 +} |
