Attached patch removes the obsolete means to specify the value mask from i2cset.
It also streamlines and improves parameter validation.
--
Index: tools/i2cset.c
===================================================================
--- tools/i2cset.c (revision 5911)
+++ tools/i2cset.c (working copy)
@@ -156,7 +156,7 @@
char *end;
const char *maskp = NULL;
int res, i2cbus, address, size, file;
- int value, daddress, vmask = 0;
+ int value = -1, daddress, vmask = 0;
char filename[20];
int pec = 0;
int flags = 0;
@@ -207,74 +207,78 @@
help();
}
- /* check for block data */
len = 0;
- if (argc > flags + 5) {
+ if (argc == flags + 4) {
+ /* Implicit "c" */
+ size = I2C_SMBUS_BYTE;
+ } else if (argc == flags + 5) {
+ /* "c", "cp", or implicit "b" */
+ if (!strcmp(argv[flags+4], "c")
+ || !strcmp(argv[flags+4], "cp")) {
+ size = I2C_SMBUS_BYTE;
+ pec = argv[flags+4][1] == 'p';
+ } else {
+ size = I2C_SMBUS_BYTE_DATA;
+ }
+ } else {
+ /* All other commands */
+ if (strlen(argv[argc-1]) > 2
+ || (strlen(argv[argc-1]) == 2 && argv[argc-1][1] != 'p')) {
+ fprintf(stderr, "Error: Invalid argument '%s'\n",
argv[argc-1]);
+ help();
+ }
switch (argv[argc-1][0]) {
+ case 'b': size = I2C_SMBUS_BYTE_DATA; break;
+ case 'w': size = I2C_SMBUS_WORD_DATA; break;
case 's': size = I2C_SMBUS_BLOCK_DATA; break;
case 'i': size = I2C_SMBUS_I2C_BLOCK_DATA; break;
default:
- size = 0;
- break;
+ fprintf(stderr, "Error: Invalid argument '%s'\n",
argv[argc-1]);
+ help();
}
+ pec = argv[argc-1][1] == 'p';
if (size == I2C_SMBUS_BLOCK_DATA || size ==
I2C_SMBUS_I2C_BLOCK_DATA) {
- pec = argv[argc-1][1] == 'p';
if (pec && size == I2C_SMBUS_I2C_BLOCK_DATA) {
fprintf(stderr, "Error: PEC not supported for
I2C block writes!\n");
help();
}
- for (len = 0; len < (int)sizeof(block) && len + flags +
5 < argc; len++) {
- value = strtol(argv[flags + len + 4], &end, 0);
- if (*end || value < 0 || value > 0xff) {
- fprintf(stderr, "Error: Block data
value invalid!\n");
- help();
- }
- block[len] = value;
- }
- goto dofile;
- }
- }
-
- if (argc > flags + 4) {
- if (!strcmp(argv[flags+4], "c")
- || !strcmp(argv[flags+4], "cp")) {
- size = I2C_SMBUS_BYTE;
- value = -1;
- pec = argv[flags+4][1] == 'p';
- } else {
- size = I2C_SMBUS_BYTE_DATA;
- value = strtol(argv[flags+4], &end, 0);
- if (*end || value < 0) {
- fprintf(stderr, "Error: Data value invalid!\n");
+ if (maskp) {
+ fprintf(stderr, "Error: Mask not supported for
block writes!\n");
help();
}
+ } else if (argc != flags + 6) {
+ fprintf(stderr, "Error: Bad number of arguments!\n");
+ help();
}
- } else {
- size = I2C_SMBUS_BYTE;
- value = -1;
}
- if (argc > flags + 5) {
- switch (argv[flags+5][0]) {
- case 'b': size = I2C_SMBUS_BYTE_DATA; break;
- case 'w': size = I2C_SMBUS_WORD_DATA; break;
- default:
- fprintf(stderr, "Error: Invalid mode!\n");
+ switch(size) {
+ case I2C_SMBUS_BYTE_DATA:
+ case I2C_SMBUS_WORD_DATA:
+ value = strtol(argv[flags+4], &end, 0);
+ if (*end || value < 0) {
+ fprintf(stderr, "Error: Data value invalid!\n");
help();
}
- pec = argv[flags+5][1] == 'p';
- }
-
- /* Old method to provide the value mask, deprecated and no longer
- documented but still supported for compatibility */
- if (argc > flags + 6) {
- if (maskp) {
- fprintf(stderr, "Error: Data value mask provided
twice!\n");
+ if ((size == I2C_SMBUS_BYTE_DATA && value > 0xff)
+ || (size == I2C_SMBUS_WORD_DATA && value > 0xffff)) {
+ fprintf(stderr, "Error: Data value out of range!\n");
help();
}
- fprintf(stderr, "Warning: Using deprecated way to set the data
value mask!\n");
- fprintf(stderr, " Please switch to using -m.\n");
- maskp = argv[flags+6];
+ break;
+ case I2C_SMBUS_BLOCK_DATA:
+ case I2C_SMBUS_I2C_BLOCK_DATA:
+ for (len = 0; len < (int)sizeof(block) && len + flags + 5 <
argc; len++) {
+ value = strtol(argv[flags + len + 4], &end, 0);
+ if (*end || value < 0 || value > 0xff) {
+ fprintf(stderr, "Error: Block data
value invalid!\n");
+ help();
+ }
+ block[len] = value;
+ }
+ break;
+ default:
+ break;
}
if (maskp) {
@@ -285,13 +289,6 @@
}
}
- if ((size == I2C_SMBUS_BYTE_DATA && value > 0xff)
- || (size == I2C_SMBUS_WORD_DATA && value > 0xffff)) {
- fprintf(stderr, "Error: Data value out of range!\n");
- help();
- }
-
-dofile:
file = open_i2c_dev(i2cbus, filename, sizeof(filename), 0);
if (file < 0
|| check_funcs(file, size, pec)
Index: CHANGES
===================================================================
--- CHANGES (revision 5911)
+++ CHANGES (working copy)
@@ -4,6 +4,8 @@
SVN
i2c-dev.h: Make value arrays const for block write functions
i2cset: Add support for SMBus and I2C block writes
+ Removed obsolete method to specify write mask
+ More stringent parameter validation
3.0.3 (2010-12-12)
Makefile: Let the environment set CC and CFLAGS
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