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Fixes by Luca Mottola: don't call write with zero-length data; added parameter to specify block size to read command

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This commit is contained in:
adamdunkels 2009-02-19 22:56:56 +00:00
parent 957ae56b13
commit 47a6eb5210
1 changed files with 22 additions and 6 deletions
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28
apps/shell/shell-file.c
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@ -28,7 +28,7 @@
*
* This file is part of the Contiki operating system.
*
* $Id: shell-file.c,v 1.8 2008/12/01 15:58:14 nvt-se Exp $
* $Id: shell-file.c,v 1.9 2009/02/19 22:56:56 adamdunkels Exp $
*/
/**
@ -46,6 +46,7 @@
#include <string.h>
#define MAX_FILENAME_LEN 40
#define MAX_BLOCKSIZE 40
/*---------------------------------------------------------------------------*/
PROCESS(shell_ls_process, "ls");
@ -159,9 +160,14 @@ PROCESS_THREAD(shell_write_process, ev, data)
PROCESS_EXIT();
}
cfs_write(fd, input->data1, input->len1);
cfs_write(fd, input->data2, input->len2);
if(input->len1 > 0) {
cfs_write(fd, input->data1, input->len1);
}
if(input->len2 > 0) {
cfs_write(fd, input->data2, input->len2);
}
shell_output(&write_command,
input->data1, input->len1,
input->data2, input->len2);
@ -178,6 +184,7 @@ PROCESS_THREAD(shell_read_process, ev, data)
char filename[MAX_FILENAME_LEN];
int len;
int offset = 0;
static int block_size = MAX_BLOCKSIZE;
PROCESS_EXITHANDLER(cfs_close(fd));
PROCESS_BEGIN();
@ -201,6 +208,15 @@ PROCESS_THREAD(shell_read_process, ev, data)
filename[len] = 0;
offset = shell_strtolong(next, NULL);
next++;
next = strchr(next, ' ');
block_size = shell_strtolong(next, NULL);
if(block_size > MAX_BLOCKSIZE) {
shell_output_str(&read_command,
"read: block size too large: ", data);
PROCESS_EXIT();
}
}
fd = cfs_open(filename, CFS_READ);
@ -212,11 +228,11 @@ PROCESS_THREAD(shell_read_process, ev, data)
} else {
while(1) {
char buf[40];
char buf[MAX_BLOCKSIZE];
int len;
struct shell_input *input;
len = cfs_read(fd, buf, sizeof(buf));
len = cfs_read(fd, buf, block_size);
if(len <= 0) {
cfs_close(fd);
PROCESS_EXIT();