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author | Steve Bennett <steveb@workware.net.au> | 2016-09-14 14:15:47 +1000 |
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committer | Steve Bennett <steveb@workware.net.au> | 2017-10-17 07:39:39 +1000 |
commit | 1fd4fb6a645fa107d644f1ca0a0a8d7aa702e1d5 (patch) | |
tree | 78c2baa61687fa296dc418cd1b978b3e046813f6 /jimiocompat.c | |
parent | 4be55f10c4d2071f493b9a1b60197c5e20f3203d (diff) | |
download | jimtcl-1fd4fb6a645fa107d644f1ca0a0a8d7aa702e1d5.zip jimtcl-1fd4fb6a645fa107d644f1ca0a0a8d7aa702e1d5.tar.gz jimtcl-1fd4fb6a645fa107d644f1ca0a0a8d7aa702e1d5.tar.bz2 |
signal, exec, wait, pid: improvements, especially to exec
- fix popen [open "|pipeline ..."] to return meaningful status in close
(but note that stderr is not captured)
- popen pipelines can now be used as the target of exec redirection
- overally improvements to exec on windows. Now crt file descriptors
are used throughout
- add support for [pid], [wait] and popen on windows
- os.wait is now wait, and integrates with [exec ... &] to be able
to wait for running background tasks
- [socket pipe] is now also [pipe] and is supported on windows
- [file tempfile] is supported on windows
- move duplicated code between jim-aio.c and jim-exec.c to jimiocompat.c
- Fix [exec] on windows to match unix semantics wrt sharing the parent stream
unless redirected rather than using /dev/null
- On windows redirect to or from /dev/null is automatically converted to NUL:
- If signal support is disabled, implement a minimal Jim_SignalId() for exec and wait
- aio now supports getfd, to return the underlying file descriptor.
This is used by exec to support redirection, and allows popen channels
to support exec redirection.
Signed-off-by: Steve Bennett <steveb@workware.net.au>
Diffstat (limited to 'jimiocompat.c')
-rw-r--r-- | jimiocompat.c | 214 |
1 files changed, 214 insertions, 0 deletions
diff --git a/jimiocompat.c b/jimiocompat.c new file mode 100644 index 0000000..c8c3f86 --- /dev/null +++ b/jimiocompat.c @@ -0,0 +1,214 @@ +#include <string.h> +#include "jimiocompat.h" + +void Jim_SetResultErrno(Jim_Interp *interp, const char *msg) +{ + Jim_SetResultFormatted(interp, "%s: %s", msg, strerror(Jim_Errno())); +} + +#if defined(__MINGW32__) +#include <sys/stat.h> + +int Jim_Errno(void) +{ + switch (GetLastError()) { + case ERROR_FILE_NOT_FOUND: return ENOENT; + case ERROR_PATH_NOT_FOUND: return ENOENT; + case ERROR_TOO_MANY_OPEN_FILES: return EMFILE; + case ERROR_ACCESS_DENIED: return EACCES; + case ERROR_INVALID_HANDLE: return EBADF; + case ERROR_BAD_ENVIRONMENT: return E2BIG; + case ERROR_BAD_FORMAT: return ENOEXEC; + case ERROR_INVALID_ACCESS: return EACCES; + case ERROR_INVALID_DRIVE: return ENOENT; + case ERROR_CURRENT_DIRECTORY: return EACCES; + case ERROR_NOT_SAME_DEVICE: return EXDEV; + case ERROR_NO_MORE_FILES: return ENOENT; + case ERROR_WRITE_PROTECT: return EROFS; + case ERROR_BAD_UNIT: return ENXIO; + case ERROR_NOT_READY: return EBUSY; + case ERROR_BAD_COMMAND: return EIO; + case ERROR_CRC: return EIO; + case ERROR_BAD_LENGTH: return EIO; + case ERROR_SEEK: return EIO; + case ERROR_WRITE_FAULT: return EIO; + case ERROR_READ_FAULT: return EIO; + case ERROR_GEN_FAILURE: return EIO; + case ERROR_SHARING_VIOLATION: return EACCES; + case ERROR_LOCK_VIOLATION: return EACCES; + case ERROR_SHARING_BUFFER_EXCEEDED: return ENFILE; + case ERROR_HANDLE_DISK_FULL: return ENOSPC; + case ERROR_NOT_SUPPORTED: return ENODEV; + case ERROR_REM_NOT_LIST: return EBUSY; + case ERROR_DUP_NAME: return EEXIST; + case ERROR_BAD_NETPATH: return ENOENT; + case ERROR_NETWORK_BUSY: return EBUSY; + case ERROR_DEV_NOT_EXIST: return ENODEV; + case ERROR_TOO_MANY_CMDS: return EAGAIN; + case ERROR_ADAP_HDW_ERR: return EIO; + case ERROR_BAD_NET_RESP: return EIO; + case ERROR_UNEXP_NET_ERR: return EIO; + case ERROR_NETNAME_DELETED: return ENOENT; + case ERROR_NETWORK_ACCESS_DENIED: return EACCES; + case ERROR_BAD_DEV_TYPE: return ENODEV; + case ERROR_BAD_NET_NAME: return ENOENT; + case ERROR_TOO_MANY_NAMES: return ENFILE; + case ERROR_TOO_MANY_SESS: return EIO; + case ERROR_SHARING_PAUSED: return EAGAIN; + case ERROR_REDIR_PAUSED: return EAGAIN; + case ERROR_FILE_EXISTS: return EEXIST; + case ERROR_CANNOT_MAKE: return ENOSPC; + case ERROR_OUT_OF_STRUCTURES: return ENFILE; + case ERROR_ALREADY_ASSIGNED: return EEXIST; + case ERROR_INVALID_PASSWORD: return EPERM; + case ERROR_NET_WRITE_FAULT: return EIO; + case ERROR_NO_PROC_SLOTS: return EAGAIN; + case ERROR_DISK_CHANGE: return EXDEV; + case ERROR_BROKEN_PIPE: return EPIPE; + case ERROR_OPEN_FAILED: return ENOENT; + case ERROR_DISK_FULL: return ENOSPC; + case ERROR_NO_MORE_SEARCH_HANDLES: return EMFILE; + case ERROR_INVALID_TARGET_HANDLE: return EBADF; + case ERROR_INVALID_NAME: return ENOENT; + case ERROR_PROC_NOT_FOUND: return ESRCH; + case ERROR_WAIT_NO_CHILDREN: return ECHILD; + case ERROR_CHILD_NOT_COMPLETE: return ECHILD; + case ERROR_DIRECT_ACCESS_HANDLE: return EBADF; + case ERROR_SEEK_ON_DEVICE: return ESPIPE; + case ERROR_BUSY_DRIVE: return EAGAIN; + case ERROR_DIR_NOT_EMPTY: return EEXIST; + case ERROR_NOT_LOCKED: return EACCES; + case ERROR_BAD_PATHNAME: return ENOENT; + case ERROR_LOCK_FAILED: return EACCES; + case ERROR_ALREADY_EXISTS: return EEXIST; + case ERROR_FILENAME_EXCED_RANGE: return ENAMETOOLONG; + case ERROR_BAD_PIPE: return EPIPE; + case ERROR_PIPE_BUSY: return EAGAIN; + case ERROR_PIPE_NOT_CONNECTED: return EPIPE; + case ERROR_DIRECTORY: return ENOTDIR; + } + return EINVAL; +} + +pidtype waitpid(pidtype pid, int *status, int nohang) +{ + DWORD ret = WaitForSingleObject(pid, nohang ? 0 : INFINITE); + if (ret == WAIT_TIMEOUT || ret == WAIT_FAILED) { + /* WAIT_TIMEOUT can only happend with WNOHANG */ + return JIM_BAD_PID; + } + GetExitCodeProcess(pid, &ret); + *status = ret; + CloseHandle(pid); + return pid; +} + +int Jim_MakeTempFile(Jim_Interp *interp, const char *filename_template, int unlink_file) +{ + char name[MAX_PATH]; + HANDLE handle; + + if (!GetTempPath(MAX_PATH, name) || !GetTempFileName(name, filename_template ? filename_template : "JIM", 0, name)) { + return -1; + } + + handle = CreateFile(name, GENERIC_READ | GENERIC_WRITE, 0, NULL, + CREATE_ALWAYS, FILE_ATTRIBUTE_TEMPORARY | (unlink_file ? FILE_FLAG_DELETE_ON_CLOSE : 0), + NULL); + + if (handle == INVALID_HANDLE_VALUE) { + goto error; + } + + Jim_SetResultString(interp, name, -1); + return _open_osfhandle((int)handle, _O_RDWR | _O_TEXT); + + error: + Jim_SetResultErrno(interp, name); + DeleteFile(name); + return -1; +} + +int Jim_OpenForWrite(const char *filename, int append) +{ + if (strcmp(filename, "/dev/null") == 0) { + filename = "nul:"; + } + int fd = _open(filename, _O_WRONLY | _O_CREAT | _O_TEXT | (append ? _O_APPEND : _O_TRUNC), _S_IREAD | _S_IWRITE); + if (fd >= 0 && append) { + /* Note that _O_APPEND doesn't actually work. need to do it manually */ + _lseek(fd, 0L, SEEK_END); + } + return fd; +} + +int Jim_OpenForRead(const char *filename) +{ + if (strcmp(filename, "/dev/null") == 0) { + filename = "nul:"; + } + return _open(filename, _O_RDONLY | _O_TEXT, 0); +} + +#elif defined(HAVE_UNISTD_H) + +/* Unix-specific implementation */ + +int Jim_MakeTempFile(Jim_Interp *interp, const char *filename_template, int unlink_file) +{ + int fd; + mode_t mask; + Jim_Obj *filenameObj; + + if (filename_template == NULL) { + const char *tmpdir = getenv("TMPDIR"); + if (tmpdir == NULL || *tmpdir == '\0' || access(tmpdir, W_OK) != 0) { + tmpdir = "/tmp/"; + } + filenameObj = Jim_NewStringObj(interp, tmpdir, -1); + if (tmpdir[0] && tmpdir[strlen(tmpdir) - 1] != '/') { + Jim_AppendString(interp, filenameObj, "/", 1); + } + Jim_AppendString(interp, filenameObj, "tcl.tmp.XXXXXX", -1); + } + else { + filenameObj = Jim_NewStringObj(interp, filename_template, -1); + } + + /* Update the template name directly with the filename */ + mask = umask(S_IXUSR | S_IRWXG | S_IRWXO); +#ifdef HAVE_MKSTEMP + fd = mkstemp(filenameObj->bytes); +#else + if (mktemp(filenameObj->bytes) == NULL) { + fd = -1; + } + else { + fd = open(filenameObj->bytes, O_RDWR | O_CREAT | O_TRUNC); + } +#endif + umask(mask); + if (fd < 0) { + Jim_SetResultErrno(interp, Jim_String(filenameObj)); + Jim_FreeNewObj(interp, filenameObj); + return -1; + } + if (unlink_file) { + remove(Jim_String(filenameObj)); + } + + Jim_SetResult(interp, filenameObj); + return fd; +} + +int Jim_OpenForWrite(const char *filename, int append) +{ + return open(filename, O_WRONLY | O_CREAT | (append ? O_APPEND : O_TRUNC), 0666); +} + +int Jim_OpenForRead(const char *filename) +{ + return open(filename, O_RDONLY, 0); +} + +#endif |