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Diffstat (limited to 'lib/cmyth/libcmyth/file.c')
-rw-r--r--lib/cmyth/libcmyth/file.c820
1 files changed, 0 insertions, 820 deletions
diff --git a/lib/cmyth/libcmyth/file.c b/lib/cmyth/libcmyth/file.c
deleted file mode 100644
index 1939aa9e1c..0000000000
--- a/lib/cmyth/libcmyth/file.c
+++ /dev/null
@@ -1,820 +0,0 @@
-/*
- * Copyright (C) 2004-2012, Eric Lund
- * http://www.mvpmc.org/
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <errno.h>
-#include <inttypes.h>
-#include <sys/types.h>
-#include <cmyth_local.h>
-
-/*
- * cmyth_file_destroy(cmyth_file_t file)
- *
- * Scope: PRIVATE (static)
- *
- * Description
- *
- * Tear down and release storage associated with a file connection.
- * This should only be called by ref_release(). All others
- * should call ref_release() to release a file connection.
- *
- * Return Value:
- *
- * None.
- */
-static void
-cmyth_file_destroy(cmyth_file_t file)
-{
- int err;
- char msg[256];
-
- cmyth_dbg(CMYTH_DBG_DEBUG, "%s {\n", __FUNCTION__);
- if (!file) {
- cmyth_dbg(CMYTH_DBG_DEBUG, "%s }!\n", __FUNCTION__);
- return;
- }
- if (file->file_control) {
- pthread_mutex_lock(&mutex);
-
- /*
- * Try to shut down the file transfer. Can't do much
- * if it fails other than log it.
- */
- snprintf(msg, sizeof(msg),
- "QUERY_FILETRANSFER %ld[]:[]DONE", file->file_id);
-
- if ((err = cmyth_send_message(file->file_control, msg)) < 0) {
- cmyth_dbg(CMYTH_DBG_ERROR,
- "%s: cmyth_send_message() failed (%d)\n",
- __FUNCTION__, err);
- goto fail;
- }
-
- if ((err=cmyth_rcv_okay(file->file_control, "ok")) < 0) {
- cmyth_dbg(CMYTH_DBG_ERROR,
- "%s: cmyth_rcv_okay() failed (%d)\n",
- __FUNCTION__, err);
- goto fail;
- }
- fail:
- ref_release(file->file_control);
- pthread_mutex_unlock(&mutex);
- }
- if (file->closed_callback) {
- (file->closed_callback)(file);
- }
- if (file->file_data) {
- ref_release(file->file_data);
- }
-
- cmyth_dbg(CMYTH_DBG_DEBUG, "%s }\n", __FUNCTION__);
-}
-
-/*
- * cmyth_file_set_closed_callback(cmyth_file_t file, void (*callback)(cmyth_file_t))
- *
- * Scope: PUBLIC
- *
- * Description
- *
- * Sets a callback which will be called when a file connection has been
- * signalled as done. Passing in NULL means no callback.
- */
-
-void cmyth_file_set_closed_callback(cmyth_file_t file, void (*callback)(cmyth_file_t))
-{
- if(!file)
- return;
- file->closed_callback = callback;
-}
-
-/*
- * cmyth_file_create(cmyth_conn_t control)
- *
- * Scope: PRIVATE (mapped to __cmyth_file_create)
- *
- * Description
- *
- * Allocate and initialize a cmyth_file_t structure. This should only
- * be called by cmyth_connect_file(), which establishes a file
- * transfer connection.
- *
- * Return Value:
- *
- * Success: A non-NULL cmyth_file_t (this type is a pointer)
- *
- * Failure: A NULL cmyth_file_t
- */
-cmyth_file_t
-cmyth_file_create(cmyth_conn_t control)
-{
- cmyth_file_t ret = ref_alloc(sizeof(*ret));
-
- cmyth_dbg(CMYTH_DBG_DEBUG, "%s {\n", __FUNCTION__);
- if (!ret) {
- cmyth_dbg(CMYTH_DBG_DEBUG, "%s }\n", __FUNCTION__);
- return NULL;
- }
- ref_set_destroy(ret, (ref_destroy_t)cmyth_file_destroy);
-
- ret->file_control = ref_hold(control);
- ret->file_data = NULL;
- ret->file_id = -1;
- ret->file_start = 0;
- ret->file_length = 0;
- ret->file_pos = 0;
- ret->file_req = 0;
- ret->closed_callback = NULL;
- cmyth_dbg(CMYTH_DBG_DEBUG, "%s }\n", __FUNCTION__);
- return ret;
-}
-
-/*
- * cmyth_file_data(cmyth_file_t p)
- *
- * Scope: PUBLIC
- *
- * Description
- *
- * Obtain a held reference to the data connection inside of a file
- * connection. This cmyth_conn_t can be used to read data from the
- * MythTV backend server during a file transfer.
- *
- * Return Value:
- *
- * Sucess: A non-null cmyth_conn_t (this is a pointer type)
- *
- * Failure: NULL
- */
-cmyth_conn_t
-cmyth_file_data(cmyth_file_t file)
-{
- if (!file) {
- return NULL;
- }
- if (!file->file_data) {
- return NULL;
- }
- return ref_hold(file->file_data);
-}
-
-/*
- * cmyth_file_control(cmyth_file_t p)
- *
- * Scope: PUBLIC
- *
- * Description
- *
- * Obtain a held reference to the control connection inside of a file
- * connection. This cmyth_conn_t can be used to control the
- * MythTV backend server during a file transfer.
- *
- * Return Value:
- *
- * Sucess: A non-null cmyth_conn_t (this is a pointer type)
- *
- * Failure: NULL
- */
-cmyth_conn_t
-cmyth_file_control(cmyth_file_t file)
-{
- if (!file) {
- return NULL;
- }
- if (!file->file_control) {
- return NULL;
- }
- return ref_hold(file->file_control);
-}
-
-/*
- * cmyth_file_start(cmyth_file_t p)
- *
- * Scope: PUBLIC
- *
- * Description
- *
- * Obtain the start offset in a file for the beginning of the data.
- *
- * Return Value:
- *
- * Sucess: a long long value >= 0
- *
- * Failure: a long long containing -errno
- */
-unsigned long long
-cmyth_file_start(cmyth_file_t file)
-{
- if (!file) {
- return -EINVAL;
- }
- return file->file_start;
-}
-
-/*
- * cmyth_file_length(cmyth_file_t p)
- *
- * Scope: PUBLIC
- *
- * Description
- *
- * Obtain the length of the data in a file.
- *
- * Return Value:
- *
- * Sucess: a long long value >= 0
- *
- * Failure: a long long containing -errno
- */
-unsigned long long
-cmyth_file_length(cmyth_file_t file)
-{
- if (!file) {
- return -EINVAL;
- }
- return file->file_length;
-}
-
-/*
- * cmyth_file_get_block(cmyth_file_t file, char *buf, unsigned long len)
- *
- * Scope: PUBLIC
- *
- * Description
- *
- * Read incoming file data off the network into a buffer of length len.
- *
- * Return Value:
- *
- * Sucess: number of bytes read into buf
- *
- * Failure: -1
- */
-int
-cmyth_file_get_block(cmyth_file_t file, char *buf, unsigned long len)
-{
- struct timeval tv;
- fd_set fds;
- int ret;
-
- if (file == NULL || file->file_data == NULL)
- return -EINVAL;
-
- tv.tv_sec = 10;
- tv.tv_usec = 0;
- FD_ZERO(&fds);
- FD_SET(file->file_data->conn_fd, &fds);
- if (select((int)(file->file_data->conn_fd)+1, NULL, &fds, NULL, &tv) == 0) {
- file->file_data->conn_hang = 1;
- return 0;
- } else {
- file->file_data->conn_hang = 0;
- }
-
- ret = recv(file->file_data->conn_fd, buf, len, 0);
-
- if(ret < 0)
- return ret;
-
- file->file_pos += ret;
-
- if(file->file_pos > file->file_length)
- file->file_length = file->file_pos;
-
- return ret;
-}
-
-int
-cmyth_file_select(cmyth_file_t file, struct timeval *timeout)
-{
- fd_set fds;
- int ret;
- cmyth_socket_t fd;
-
- if (file == NULL || file->file_data == NULL)
- return -EINVAL;
-
- fd = file->file_data->conn_fd;
-
- FD_ZERO(&fds);
- FD_SET(fd, &fds);
-
- ret = select((int)fd+1, &fds, NULL, NULL, timeout);
-
- if (ret == 0)
- file->file_data->conn_hang = 1;
- else
- file->file_data->conn_hang = 0;
-
- return ret;
-}
-
-/*
- * cmyth_file_request_block(cmyth_file_t file, unsigned long len)
- *
- * Scope: PUBLIC
- *
- * Description
- *
- * Request a file data block of a certain size, and return when the
- * block has been transfered.
- *
- * Return Value:
- *
- * Sucess: number of bytes transfered
- *
- * Failure: an int containing -errno
- */
-int
-cmyth_file_request_block(cmyth_file_t file, unsigned long len)
-{
- int err, count;
- int r;
- long c, ret;
- char msg[256];
-
- if (!file) {
- cmyth_dbg(CMYTH_DBG_ERROR, "%s: no connection\n",
- __FUNCTION__);
- return -EINVAL;
- }
-
- pthread_mutex_lock(&mutex);
-
- if(len > (unsigned int)file->file_control->conn_tcp_rcvbuf)
- len = (unsigned int)file->file_control->conn_tcp_rcvbuf;
-
- snprintf(msg, sizeof(msg),
- "QUERY_FILETRANSFER %ld[]:[]REQUEST_BLOCK[]:[]%ld",
- file->file_id, len);
-
- if ((err = cmyth_send_message(file->file_control, msg)) < 0) {
- cmyth_dbg(CMYTH_DBG_ERROR,
- "%s: cmyth_send_message() failed (%d)\n",
- __FUNCTION__, err);
- ret = err;
- goto out;
- }
-
- if ((count=cmyth_rcv_length(file->file_control)) < 0) {
- cmyth_dbg(CMYTH_DBG_ERROR,
- "%s: cmyth_rcv_length() failed (%d)\n",
- __FUNCTION__, count);
- ret = count;
- goto out;
- }
- if ((r=cmyth_rcv_long(file->file_control, &err, &c, count)) < 0) {
- cmyth_dbg(CMYTH_DBG_ERROR,
- "%s: cmyth_rcv_long() failed (%d)\n",
- __FUNCTION__, r);
- ret = err;
- goto out;
- }
-
- file->file_req += c;
- ret = c;
-
- out:
- pthread_mutex_unlock(&mutex);
-
- return ret;
-}
-
-/*
- * cmyth_file_seek(cmyth_file_t file, long long offset, int whence)
- *
- * Scope: PUBLIC
- *
- * Description
- *
- * Seek to a new position in the file based on the value of whence:
- * SEEK_SET
- * The offset is set to offset bytes.
- * SEEK_CUR
- * The offset is set to the current position plus offset bytes.
- * SEEK_END
- * The offset is set to the size of the file minus offset bytes.
- *
- * Return Value:
- *
- * Sucess: 0
- *
- * Failure: an int containing -errno
- */
-long long
-cmyth_file_seek(cmyth_file_t file, long long offset, int whence)
-{
- char msg[128];
- int err;
- int count;
- int64_t c;
- long r;
- long long ret;
-
- if (file == NULL)
- return -EINVAL;
-
- if ((offset == 0) && (whence == SEEK_CUR))
- return file->file_pos;
-
- if ((offset == file->file_pos) && (whence == SEEK_SET))
- return file->file_pos;
-
- while(file->file_pos < file->file_req) {
- c = file->file_req - file->file_pos;
- if(c > sizeof(msg))
- c = sizeof(msg);
-
- if (cmyth_file_get_block(file, msg, (unsigned long)c) < 0)
- return -1;
- }
-
- pthread_mutex_lock(&mutex);
-
- if (file->file_control->conn_version >= 66) {
- /*
- * Since protocol 66 mythbackend expects to receive a single 64 bit integer rather than
- * two 32 bit hi and lo integers.
- */
- snprintf(msg, sizeof(msg),
- "QUERY_FILETRANSFER %ld[]:[]SEEK[]:[]%"PRIu64"[]:[]%d[]:[]%"PRIu64,
- file->file_id,
- (int64_t)offset,
- whence,
- (int64_t)file->file_pos);
- }
- else {
- snprintf(msg, sizeof(msg),
- "QUERY_FILETRANSFER %ld[]:[]SEEK[]:[]%d[]:[]%d[]:[]%d[]:[]%d[]:[]%d",
- file->file_id,
- (int32_t)(offset >> 32),
- (int32_t)(offset & 0xffffffff),
- whence,
- (int32_t)(file->file_pos >> 32),
- (int32_t)(file->file_pos & 0xffffffff));
- }
-
- if ((err = cmyth_send_message(file->file_control, msg)) < 0) {
- cmyth_dbg(CMYTH_DBG_ERROR,
- "%s: cmyth_send_message() failed (%d)\n",
- __FUNCTION__, err);
- ret = err;
- goto out;
- }
-
- if ((count=cmyth_rcv_length(file->file_control)) < 0) {
- cmyth_dbg(CMYTH_DBG_ERROR,
- "%s: cmyth_rcv_length() failed (%d)\n",
- __FUNCTION__, count);
- ret = count;
- goto out;
- }
- if ((r=cmyth_rcv_int64(file->file_control, &err, &c, count)) < 0) {
- cmyth_dbg(CMYTH_DBG_ERROR,
- "%s: cmyth_rcv_int64() failed (%d)\n",
- __FUNCTION__, r);
- ret = err;
- goto out;
- }
-
- switch (whence) {
- case SEEK_SET:
- file->file_pos = offset;
- break;
- case SEEK_CUR:
- file->file_pos += offset;
- break;
- case SEEK_END:
- file->file_pos = file->file_length - offset;
- break;
- }
-
- file->file_req = file->file_pos;
- if(file->file_pos > file->file_length)
- file->file_length = file->file_pos;
-
- ret = file->file_pos;
-
- out:
- pthread_mutex_unlock(&mutex);
-
- return ret;
-}
-
-/*
- * cmyth_file_read(cmyth_recorder_t rec, char *buf, unsigned long len)
- *
- * Scope: PUBLIC
- *
- * Description
- *
- * Request and read a block of data from backend
- *
- * Return Value:
- *
- * Sucess: number of bytes transfered
- *
- * Failure: an int containing -errno
- */
-int cmyth_file_read(cmyth_file_t file, char *buf, unsigned long len)
-{
- int err, count;
- int ret, req, nfds, rec;
- char *end, *cur;
- char msg[256];
- int64_t len64;
- struct timeval tv;
- fd_set fds;
-
- if (!file || !file->file_data) {
- cmyth_dbg (CMYTH_DBG_ERROR, "%s: no connection\n",
- __FUNCTION__);
- return -EINVAL;
- }
- if (len == 0)
- return 0;
-
- pthread_mutex_lock (&mutex);
-
- /* make sure we have outstanding requests that fill the buffer that was called with */
- /* this way we should be able to saturate the network connection better */
- if (file->file_req < file->file_pos + len) {
-
- snprintf (msg, sizeof (msg),
- "QUERY_FILETRANSFER %ld[]:[]REQUEST_BLOCK[]:[]%ld",
- file->file_id, (unsigned long)(file->file_pos + len - file->file_req));
-
- if ( (err = cmyth_send_message (file->file_control, msg) ) < 0) {
- cmyth_dbg (CMYTH_DBG_ERROR,
- "%s: cmyth_send_message() failed (%d)\n",
- __FUNCTION__, err);
- ret = err;
- goto out;
- }
- req = 1;
- } else {
- req = 0;
- }
-
- rec = 0;
- cur = buf;
- end = buf+len;
-
- while (cur == buf || req || rec) {
- if(rec) {
- tv.tv_sec = 0;
- tv.tv_usec = 0;
- } else {
- tv.tv_sec = 20;
- tv.tv_usec = 0;
- }
- nfds = 0;
-
- FD_ZERO (&fds);
- if (req) {
- if ((int)file->file_control->conn_fd > nfds)
- nfds = (int)file->file_control->conn_fd;
- FD_SET (file->file_control->conn_fd, &fds);
- }
- if ((int)file->file_data->conn_fd > nfds)
- nfds = (int)file->file_data->conn_fd;
- FD_SET (file->file_data->conn_fd, &fds);
-
- if ((ret = select (nfds+1, &fds, NULL, NULL,&tv)) < 0) {
- cmyth_dbg (CMYTH_DBG_ERROR,
- "%s: select(() failed (%d)\n",
- __FUNCTION__, ret);
- goto out;
- }
-
- if (ret == 0 && !rec) {
- file->file_control->conn_hang = 1;
- file->file_data->conn_hang = 1;
- ret = -ETIMEDOUT;
- goto out;
- }
-
- /* check control connection */
- if (FD_ISSET(file->file_control->conn_fd, &fds)) {
-
- if ((count=cmyth_rcv_length (file->file_control)) < 0) {
- cmyth_dbg (CMYTH_DBG_ERROR,
- "%s: cmyth_rcv_length() failed (%d)\n",
- __FUNCTION__, count);
- ret = count;
- goto out;
- }
-
- /*
- * MythTV originally sent back a signed 32bit value but was changed to a
- * signed 64bit value in http://svn.mythtv.org/trac/changeset/18011 (1-Aug-2008).
- *
- * libcmyth now retrieves the 64-bit signed value, does error-checking,
- * and then converts to a 32bit unsigned.
- *
- * This rcv_ method needs to be forced to use new_int64 to pull back a
- * single 64bit number otherwise the handling in rcv_int64 will revert to
- * the old two 32bit hi and lo long values.
- */
- if ((ret=cmyth_rcv_new_int64 (file->file_control, &err, &len64, count, 1))< 0) {
- cmyth_dbg (CMYTH_DBG_ERROR,
- "%s: cmyth_rcv_new_int64() failed (%d)\n",
- __FUNCTION__, ret);
- ret = err;
- goto out;
- }
- if (len64 >= 0x100000000LL || len64 < 0) {
- /* -1 seems to be a common result, but isn't valid so use 0 instead. */
- cmyth_dbg (CMYTH_DBG_WARN,
- "%s: cmyth_rcv_new_int64() returned out of bound value (%"PRId64"). Using 0 instead.\n",
- __FUNCTION__, len64);
- len64 = 0;
- }
- len = (unsigned long)len64;
- req = 0;
- file->file_req += len;
-
- if (file->file_req < file->file_pos) {
- cmyth_dbg (CMYTH_DBG_ERROR,
- "%s: received invalid invalid length, read position is ahead of request (req: %"PRIu64", pos: %"PRIu64", len: %"PRId64")\n",
- __FUNCTION__, file->file_req, file->file_pos, len64);
- ret = -1;
- goto out;
- }
-
-
- /* check if we are already done */
- if (file->file_pos == file->file_req)
- break;
- }
-
- /* restore direct request fleg */
- rec = 0;
-
- /* check data connection */
- if (FD_ISSET(file->file_data->conn_fd, &fds)) {
- if (end < cur) {
- cmyth_dbg (CMYTH_DBG_ERROR,
- "%s: positions invalid on read, bailing out (cur: %x, end: %x)\n",
- __FUNCTION__, cur, end);
- ret = -1;
- goto out;
- }
- if ((ret = recv (file->file_data->conn_fd, cur, (int)(end-cur), 0)) < 0) {
- cmyth_dbg (CMYTH_DBG_ERROR,
- "%s: recv() failed (%d)\n",
- __FUNCTION__, ret);
- goto out;
- }
- cur += ret;
- file->file_pos += ret;
- if(ret)
- rec = 1; /* attempt to read directly again to get all queued packets */
- }
- }
-
- /* make sure file grows, as we move past length */
- if (file->file_pos > file->file_length)
- file->file_length = file->file_pos;
-
- ret = (int)(cur - buf);
-out:
- pthread_mutex_unlock (&mutex);
- return ret;
-}
-
-#ifdef _MSC_VER
-
-struct errentry {
- unsigned long oscode; /* OS return value */
- int errnocode; /* System V error code */
-};
-
-static struct errentry errtable[] = {
- { ERROR_INVALID_FUNCTION, EINVAL }, /* 1 */
- { ERROR_FILE_NOT_FOUND, ENOENT }, /* 2 */
- { ERROR_PATH_NOT_FOUND, ENOENT }, /* 3 */
- { ERROR_TOO_MANY_OPEN_FILES, EMFILE }, /* 4 */
- { ERROR_ACCESS_DENIED, EACCES }, /* 5 */
- { ERROR_INVALID_HANDLE, EBADF }, /* 6 */
- { ERROR_ARENA_TRASHED, ENOMEM }, /* 7 */
- { ERROR_NOT_ENOUGH_MEMORY, ENOMEM }, /* 8 */
- { ERROR_INVALID_BLOCK, ENOMEM }, /* 9 */
- { ERROR_BAD_ENVIRONMENT, E2BIG }, /* 10 */
- { ERROR_BAD_FORMAT, ENOEXEC }, /* 11 */
- { ERROR_INVALID_ACCESS, EINVAL }, /* 12 */
- { ERROR_INVALID_DATA, EINVAL }, /* 13 */
- { ERROR_INVALID_DRIVE, ENOENT }, /* 15 */
- { ERROR_CURRENT_DIRECTORY, EACCES }, /* 16 */
- { ERROR_NOT_SAME_DEVICE, EXDEV }, /* 17 */
- { ERROR_NO_MORE_FILES, ENOENT }, /* 18 */
- { ERROR_LOCK_VIOLATION, EACCES }, /* 33 */
- { ERROR_BAD_NETPATH, ENOENT }, /* 53 */
- { ERROR_NETWORK_ACCESS_DENIED, EACCES }, /* 65 */
- { ERROR_BAD_NET_NAME, ENOENT }, /* 67 */
- { ERROR_FILE_EXISTS, EEXIST }, /* 80 */
- { ERROR_CANNOT_MAKE, EACCES }, /* 82 */
- { ERROR_FAIL_I24, EACCES }, /* 83 */
- { ERROR_INVALID_PARAMETER, EINVAL }, /* 87 */
- { ERROR_NO_PROC_SLOTS, EAGAIN }, /* 89 */
- { ERROR_DRIVE_LOCKED, EACCES }, /* 108 */
- { ERROR_BROKEN_PIPE, EPIPE }, /* 109 */
- { ERROR_DISK_FULL, ENOSPC }, /* 112 */
- { ERROR_INVALID_TARGET_HANDLE, EBADF }, /* 114 */
- { ERROR_INVALID_HANDLE, EINVAL }, /* 124 */
- { ERROR_WAIT_NO_CHILDREN, ECHILD }, /* 128 */
- { ERROR_CHILD_NOT_COMPLETE, ECHILD }, /* 129 */
- { ERROR_DIRECT_ACCESS_HANDLE, EBADF }, /* 130 */
- { ERROR_NEGATIVE_SEEK, EINVAL }, /* 131 */
- { ERROR_SEEK_ON_DEVICE, EACCES }, /* 132 */
- { ERROR_DIR_NOT_EMPTY, ENOTEMPTY }, /* 145 */
- { ERROR_NOT_LOCKED, EACCES }, /* 158 */
- { ERROR_BAD_PATHNAME, ENOENT }, /* 161 */
- { ERROR_MAX_THRDS_REACHED, EAGAIN }, /* 164 */
- { ERROR_LOCK_FAILED, EACCES }, /* 167 */
- { ERROR_ALREADY_EXISTS, EEXIST }, /* 183 */
- { ERROR_FILENAME_EXCED_RANGE, ENOENT }, /* 206 */
- { ERROR_NESTING_NOT_ALLOWED, EAGAIN }, /* 215 */
- { ERROR_NOT_ENOUGH_QUOTA, ENOMEM } /* 1816 */
-};
-
-/* size of the table */
-#define ERRTABLESIZE (sizeof(errtable)/sizeof(errtable[0]))
-
-/* The following two constants must be the minimum and maximum
- values in the (contiguous) range of Exec Failure errors. */
-#define MIN_EXEC_ERROR ERROR_INVALID_STARTING_CODESEG
-#define MAX_EXEC_ERROR ERROR_INFLOOP_IN_RELOC_CHAIN
-
-/* These are the low and high value in the range of errors that are
- access violations */
-#define MIN_EACCES_RANGE ERROR_WRITE_PROTECT
-#define MAX_EACCES_RANGE ERROR_SHARING_BUFFER_EXCEEDED
-
-
-/***
- *void _dosmaperr(oserrno) - Map function number
- *
- *Purpose:
- * This function takes an OS error number, and maps it to the
- * corresponding errno value (based on UNIX System V values). The
- * OS error number is stored in _doserrno (and the mapped value is
- * stored in errno)
- *
- *Entry:
- * ULONG oserrno = OS error value
- *
- *Exit:
- * sets _doserrno and errno.
- *
- *Exceptions:
- *
- *******************************************************************************/
-
-void __cdecl _dosmaperr (
- unsigned long oserrno
- )
-{
- int i;
-
- _doserrno = oserrno; /* set _doserrno */
-
- /* check the table for the OS error code */
- for (i = 0; i < ERRTABLESIZE; ++i) {
- if (oserrno == errtable[i].oscode) {
- errno = errtable[i].errnocode;
- return;
- }
- }
-
- /* The error code wasn't in the table. We check for a range of */
- /* EACCES errors or exec failure errors (ENOEXEC). Otherwise */
- /* EINVAL is returned. */
-
- if (oserrno >= MIN_EACCES_RANGE && oserrno <= MAX_EACCES_RANGE)
- errno = EACCES;
- else if (oserrno >= MIN_EXEC_ERROR && oserrno <= MAX_EXEC_ERROR)
- errno = ENOEXEC;
- else
- errno = EINVAL;
-}
-
-#endif
-
generated by cgit v1.2.3 (git 2.26.2) at 2024-11-26 13:32:30 +0000