command context: fix errors when running certain commands on startup
[fw/openocd] / src / helper / fileio.c
index bb10dbd1331f6c9d3b5400d40c50c208fd39f84f..8f2ce220473f74402645a4f413935cb1b6a042ee 100644 (file)
@@ -2,6 +2,12 @@
  *   Copyright (C) 2007 by Dominic Rath                                    *
  *   Dominic.Rath@gmx.de                                                   *
  *                                                                         *
+ *   Copyright (C) 2007,2008 Ã˜yvind Harboe                                 *
+ *   oyvind.harboe@zylin.com                                               *
+ *                                                                         *
+ *   Copyright (C) 2008 by Spencer Oliver                                  *
+ *   spen@spen-soft.co.uk                                                  *
+ *                                                                         *
  *   This program is free software; you can redistribute it and/or modify  *
  *   it under the terms of the GNU General Public License as published by  *
  *   the Free Software Foundation; either version 2 of the License, or     *
 #include "config.h"
 #endif
 
-#include "types.h"
-#include "replacements.h"
 #include "log.h"
 #include "configuration.h"
-
 #include "fileio.h"
 
-#include <stdio.h>
-#include <string.h>
-#include <unistd.h>
-#include <stdlib.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <errno.h>
-#include <ctype.h>
-
-int fileio_close(fileio_t *fileio);
-int fileio_dispatch_read(fileio_t *fileio, u32 size, u8 *buffer, u32 *size_read);
-
-int fileio_open_local(fileio_t *fileio)
+static inline int fileio_open_local(struct fileio *fileio)
 {
        char access[4];
-       
+
        switch (fileio->access)
        {
                case FILEIO_READ:
@@ -56,16 +47,16 @@ int fileio_open_local(fileio_t *fileio)
                        strcpy(access, "w+");
                        break;
                case FILEIO_APPEND:
-                       strcpy(access, "a");    
+                       strcpy(access, "a");
                        break;
                case FILEIO_APPENDREAD:
-                       strcpy(access, "a+");   
+                       strcpy(access, "a+");
                        break;
                default:
-                       ERROR("BUG: access neither read, write nor readwrite");
+                       LOG_ERROR("BUG: access neither read, write nor readwrite");
                        return ERROR_INVALID_ARGUMENTS;
        }
-       
+
        /* win32 always opens in binary mode */
 #ifndef _WIN32
        if (fileio->type == FILEIO_BINARY)
@@ -73,27 +64,27 @@ int fileio_open_local(fileio_t *fileio)
        {
                strcat(access, "b");
        }
-       
+
        if (!(fileio->file = open_file_from_path (fileio->url, access)))
        {
-               ERROR("couldn't open %s", fileio->url);
+               LOG_ERROR("couldn't open %s", fileio->url);
                return ERROR_FILEIO_OPERATION_FAILED;
        }
-       
+
        if ((fileio->access != FILEIO_WRITE) || (fileio->access == FILEIO_READWRITE))
        {
                /* NB! Here we use fseek() instead of stat(), since stat is a
                 * more advanced operation that might not apply to e.g. a disk path
                 * that refers to e.g. a tftp client */
                int result, result2;
-               
+
                result = fseek(fileio->file, 0, SEEK_END);
 
                fileio->size = ftell(fileio->file);
-               
-               result2 = fseek(fileio->file, 0, SEEK_SET); 
-                       
-               if ((fileio->size<0)||(result<0)||(result2<0))
+
+               result2 = fseek(fileio->file, 0, SEEK_SET);
+
+               if ((fileio->size < 0)||(result < 0)||(result2 < 0))
                {
                        fileio_close(fileio);
                        return ERROR_FILEIO_OPERATION_FAILED;
@@ -103,134 +94,133 @@ int fileio_open_local(fileio_t *fileio)
        {
                fileio->size = 0x0;
        }
-       
+
        return ERROR_OK;
 }
 
-int fileio_open(fileio_t *fileio, char *url, enum fileio_access access,        enum fileio_type type)
+int fileio_open(struct fileio *fileio, const char *url, enum fileio_access access,     enum fileio_type type)
 {
        int retval = ERROR_OK;
 
        fileio->type = type;
        fileio->access = access;
        fileio->url = strdup(url);
-       
+
        retval = fileio_open_local(fileio);
 
        return retval;
 }
 
-int fileio_close_local(fileio_t *fileio)
+static inline int fileio_close_local(struct fileio *fileio)
 {
        int retval;
        if ((retval = fclose(fileio->file)) != 0)
        {
                if (retval == EBADF)
                {
-                       ERROR("BUG: fileio_local->file not a valid file descriptor");
+                       LOG_ERROR("BUG: fileio_local->file not a valid file descriptor");
                }
                else
                {
-                       ERROR("couldn't close %s: %s", fileio->url, strerror(errno));
+                       LOG_ERROR("couldn't close %s: %s", fileio->url, strerror(errno));
                }
 
                return ERROR_FILEIO_OPERATION_FAILED;
        }
-       
+
        return ERROR_OK;
 }
 
-int fileio_close(fileio_t *fileio)
+int fileio_close(struct fileio *fileio)
 {
        int retval;
-       
+
        retval = fileio_close_local(fileio);
-       
-       free(fileio->url);
+
+       free((void*)fileio->url);
        fileio->url = NULL;
-       
+
        return retval;
 }
 
-int fileio_seek(fileio_t *fileio, u32 position)
+int fileio_seek(struct fileio *fileio, size_t position)
 {
        int retval;
        if ((retval = fseek(fileio->file, position, SEEK_SET)) != 0)
        {
-               ERROR("couldn't seek file %s: %s", fileio->url, strerror(errno));
+               LOG_ERROR("couldn't seek file %s: %s", fileio->url, strerror(errno));
                return ERROR_FILEIO_OPERATION_FAILED;
        }
-       
+
        return ERROR_OK;
 }
 
-int fileio_local_read(fileio_t *fileio, u32 size, u8 *buffer, u32 *size_read)
+static int fileio_local_read(struct fileio *fileio,
+               size_t size, void *buffer, size_t *size_read)
 {
-       *size_read = fread(buffer, 1, size, fileio->file);
-       
-       return ERROR_OK;
+       ssize_t retval = fread(buffer, 1, size, fileio->file);
+       *size_read = (retval >= 0) ? retval : 0;
+       return (retval < 0) ? retval : ERROR_OK;
 }
 
-int fileio_read(fileio_t *fileio, u32 size, u8 *buffer, u32 *size_read)
+int fileio_read(struct fileio *fileio, size_t size, void *buffer,
+               size_t *size_read)
 {
        return fileio_local_read(fileio, size, buffer, size_read);
 }
 
-int fileio_read_u32(fileio_t *fileio, u32 *data)
+int fileio_read_u32(struct fileio *fileio, uint32_t *data)
 {
-       u8 buf[4];
-       u32 size_read;
-       int retval;
-       
-       if ((retval = fileio_local_read(fileio, 4, buf, &size_read)) != ERROR_OK)
-               return retval;
-       *data = be_to_h_u32(buf);
-       
-       return ERROR_OK;
+       uint8_t buf[4];
+       size_t size_read;
+       int retval = fileio_local_read(fileio, sizeof(uint32_t), buf, &size_read);
+       if (ERROR_OK == retval && sizeof(uint32_t) != size_read)
+               retval = -EIO;
+       if (ERROR_OK == retval)
+               *data = be_to_h_u32(buf);
+       return retval;
 }
 
-int fileio_local_fgets(fileio_t *fileio, u32 size, u8 *buffer)
+static int fileio_local_fgets(struct fileio *fileio,
+               size_t size, void *buffer)
 {
-       iffgets(buffer, size, fileio->file) == NULL)
+       if (fgets(buffer, size, fileio->file) == NULL)
                return ERROR_FILEIO_OPERATION_FAILED;
-       
+
        return ERROR_OK;
 }
 
-int fileio_fgets(fileio_t *fileio, u32 size, u8 *buffer)
+int fileio_fgets(struct fileio *fileio, size_t size, void *buffer)
 {
        return fileio_local_fgets(fileio, size, buffer);
 }
 
-int fileio_local_write(fileio_t *fileio, u32 size, u8 *buffer, u32 *size_written)
+static int fileio_local_write(struct fileio *fileio,
+               size_t size, const void *buffer, size_t *size_written)
 {
-       *size_written = fwrite(buffer, 1, size, fileio->file);
-       
-       return ERROR_OK;
+       ssize_t retval = fwrite(buffer, 1, size, fileio->file);
+       *size_written = (retval >= 0) ? retval : 0;
+       return (retval < 0) ? retval : ERROR_OK;
 }
 
-int fileio_write(fileio_t *fileio, u32 size, u8 *buffer, u32 *size_written)
+int fileio_write(struct fileio *fileio,
+               size_t size, const void *buffer, size_t *size_written)
 {
-       int retval;
-       
-       retval = fileio_local_write(fileio, size, buffer, size_written);
-       
+       int retval = fileio_local_write(fileio, size, buffer, size_written);
        if (retval == ERROR_OK)
                fileio->size += *size_written;
-       
-       return retval;;
+       return retval;
 }
 
-int fileio_write_u32(fileio_t *fileio, u32 data)
+int fileio_write_u32(struct fileio *fileio, uint32_t data)
 {
-       u8 buf[4];
-       u32 size_written;
-       int retval;
-       
+       uint8_t buf[4];
        h_u32_to_be(buf, data);
-       
-       if ((retval = fileio_local_write(fileio, 4, buf, &size_written)) != ERROR_OK)
-               return retval;
-       
-       return ERROR_OK;
+
+       size_t size_written;
+       int retval = fileio_write(fileio, 4, buf, &size_written);
+       if (ERROR_OK == retval && size_written != sizeof(uint32_t))
+               retval = -EIO;
+
+       return retval;
 }