WebSVN – HelenOS – Diff – /trunk/uspace/app/bdsh/cmds/modules/touch/touch.c


/* Copyright (c) 2008, Tim Post <tinkertim@gmail.com>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * Redistributions of source code must retain the above copyright notice, this
 * list of conditions and the following disclaimer.
 *
 * Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation
 * and/or other materials provided with the distribution.
 *
 * Neither the name of the original program's authors nor the names of its
 * contributors may be used to endorse or promote products derived from this
 * software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */
 
/* TODO: Options that people would expect, such as not creating the file if
 * it doesn't exist, specifying the access time, etc */
 
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <dirent.h>
#include <sys/types.h>
 
#include "config.h"
#include "errors.h"
#include "util.h"
#include "entry.h"
#include "touch.h"
#include "cmds.h"
 
static char *cmdname = "touch";
 
/* Dispays help for touch in various levels */
void * help_cmd_touch(unsigned int level)
{
    if (level == HELP_SHORT) {
        printf("`%s' updates access times for files\n", cmdname);
    } else {
        help_cmd_touch(HELP_SHORT);
        printf("  `%s' <file>, if the file does not exist it will be "
                "created\n", cmdname);
    }
 
    return CMD_VOID;
}
 
/* Main entry point for touch, accepts an array of arguments */
int * cmd_touch(char **argv)
{
    unsigned int argc, i = 0, ret = 0;
    int fd;
    char *buff = NULL;
 
    DIR *dirp;
 
 
    argc = cli_count_args(argv);
 
    if (argc == 1) {
        printf("%s - incorrect number of arguments. Try `help %s extended'\n",
            cmdname, cmdname);
        return CMD_FAILURE;
    }
 
    for (i = 1; i < argc; i ++) {
        buff = cli_strdup(argv[i]);
        dirp = opendir(buff);
        if (dirp) {
            cli_error(CL_ENOTSUP, "%s is a directory", buff);
            closedir(dirp);
            ret ++;
            continue;
        }
 
        fd = open(buff, O_RDWR | O_CREAT);
        if (fd < 0) {
            cli_error(CL_EFAIL, "Could not update / create %s ", buff);
            ret ++;
            continue;
        } else
            close(fd);
 
        free(buff);
    }
 
    if (ret)
        return CMD_FAILURE;
    else
        return CMD_SUCCESS;
}
 
 

Rev 3346	Rev 3376
1	/* Copyright (c) 2008, Tim Post <tinkertim@gmail.com>	1	/* Copyright (c) 2008, Tim Post <tinkertim@gmail.com>
2	* All rights reserved.	2	* All rights reserved.
3	*	3	*
4	* Redistribution and use in source and binary forms, with or without	4	* Redistribution and use in source and binary forms, with or without
5	* modification, are permitted provided that the following conditions are met:	5	* modification, are permitted provided that the following conditions are met:
6	*	6	*
7	* Redistributions of source code must retain the above copyright notice, this	7	* Redistributions of source code must retain the above copyright notice, this
8	* list of conditions and the following disclaimer.	8	* list of conditions and the following disclaimer.
9	*	9	*
10	* Redistributions in binary form must reproduce the above copyright notice,	10	* Redistributions in binary form must reproduce the above copyright notice,
11	* this list of conditions and the following disclaimer in the documentation	11	* this list of conditions and the following disclaimer in the documentation
12	* and/or other materials provided with the distribution.	12	* and/or other materials provided with the distribution.
13	*	13	*
14	* Neither the name of the original program's authors nor the names of its	14	* Neither the name of the original program's authors nor the names of its
15	* contributors may be used to endorse or promote products derived from this	15	* contributors may be used to endorse or promote products derived from this
16	* software without specific prior written permission.	16	* software without specific prior written permission.
17	*	17	*
18	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"	18	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
19	* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE	19	* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE	20	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21	* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE	21	* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
22	* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR	22	* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
23	* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF	23	* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
24	* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS	24	* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
25	* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN	25	* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
26	* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)	26	* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
27	* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE	27	* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
28	* POSSIBILITY OF SUCH DAMAGE.	28	* POSSIBILITY OF SUCH DAMAGE.
29	*/	29	*/
30		30
31	/* TODO: Options that people would expect, such as not creating the file if	31	/* TODO: Options that people would expect, such as not creating the file if
32	* it doesn't exist, specifying the access time, etc */	32	* it doesn't exist, specifying the access time, etc */
33		33
34	#include <stdio.h>	34	#include <stdio.h>
35	#include <stdlib.h>	35	#include <stdlib.h>
36	#include <unistd.h>	36	#include <unistd.h>
37	#include <fcntl.h>	37	#include <fcntl.h>
38	#include <dirent.h>	38	#include <dirent.h>
39	#include <sys/types.h>	39	#include <sys/types.h>
40		40
41	#include "config.h"	41	#include "config.h"
42	#include "errors.h"	42	#include "errors.h"
43	#include "util.h"	43	#include "util.h"
44	#include "entry.h"	44	#include "entry.h"
45	#include "touch.h"	45	#include "touch.h"
46	#include "cmds.h"	46	#include "cmds.h"
47		47
48	static char *cmdname = "touch";	48	static char *cmdname = "touch";
49		49
50	/* Dispays help for touch in various levels */	50	/* Dispays help for touch in various levels */
51	void * help_cmd_touch(unsigned int level)	51	void * help_cmd_touch(unsigned int level)
52	{	52	{
53	if (level == HELP_SHORT) {	53	if (level == HELP_SHORT) {
54	printf("`%s' updates access times for files\n", cmdname);	54	printf("`%s' updates access times for files\n", cmdname);
55	} else {	55	} else {
56	help_cmd_touch(HELP_SHORT);	56	help_cmd_touch(HELP_SHORT);
57	printf(" `%s' <file>, if the file does not exist it will be "	57	printf(" `%s' <file>, if the file does not exist it will be "
58	"created\n", cmdname);	58	"created\n", cmdname);
59	}	59	}
60		60
61	return CMD_VOID;	61	return CMD_VOID;
62	}	62	}
63		63
64	/* Main entry point for touch, accepts an array of arguments */	64	/* Main entry point for touch, accepts an array of arguments */
65	int * cmd_touch(char **argv)	65	int * cmd_touch(char **argv)
66	{	66	{
67	unsigned int argc, i = 0, ret = 0;	67	unsigned int argc, i = 0, ret = 0;
68	int fd;	68	int fd;
69	char *buff = NULL;	69	char *buff = NULL;
70		70
71	DIR *dirp;	71	DIR *dirp;
72		72
73	/* Count the arguments */	-
74	for (argc = 0; argv[argc] != NULL; argc ++);	73	argc = cli_count_args(argv);
75		74
76	if (argc == 1) {	75	if (argc == 1) {
77	printf("%s - incorrect number of arguments. Try `help %s extended'\n",	76	printf("%s - incorrect number of arguments. Try `help %s extended'\n",
78	cmdname, cmdname);	77	cmdname, cmdname);
79	return CMD_FAILURE;	78	return CMD_FAILURE;
80	}	79	}
81		80
82	for (i = 1; i < argc; i ++) {	81	for (i = 1; i < argc; i ++) {
83	buff = cli_strdup(argv[i]);	82	buff = cli_strdup(argv[i]);
84	dirp = opendir(buff);	83	dirp = opendir(buff);
85	if (dirp) {	84	if (dirp) {
86	cli_error(CL_ENOTSUP, "%s is a directory", buff);	85	cli_error(CL_ENOTSUP, "%s is a directory", buff);
87	closedir(dirp);	86	closedir(dirp);
88	ret ++;	87	ret ++;
89	continue;	88	continue;
90	}	89	}
91		90
92	fd = open(buff, O_RDWR \| O_CREAT);	91	fd = open(buff, O_RDWR \| O_CREAT);
93	if (fd < 0) {	92	if (fd < 0) {
94	cli_error(CL_EFAIL, "Could not update / create %s ", buff);	93	cli_error(CL_EFAIL, "Could not update / create %s ", buff);
95	ret ++;	94	ret ++;
96	continue;	95	continue;
97	} else	96	} else
98	close(fd);	97	close(fd);
99		98
100	free(buff);	99	free(buff);
101	}	100	}
102		101
103	if (ret)	102	if (ret)
104	return CMD_FAILURE;	103	return CMD_FAILURE;
105	else	104	else
106	return CMD_SUCCESS;	105	return CMD_SUCCESS;
107	}	106	}
108		107
109		108

Subversion Repositories HelenOS

(root)/trunk/uspace/app/bdsh/cmds/modules/touch/touch.c – Rev 3346 → 3376