diff options
Diffstat (limited to 'miscutils')
| -rw-r--r-- | miscutils/hdparm.c | 77 |
1 files changed, 24 insertions, 53 deletions
diff --git a/miscutils/hdparm.c b/miscutils/hdparm.c index c47cc4e9d..b3c240835 100644 --- a/miscutils/hdparm.c +++ b/miscutils/hdparm.c @@ -1416,62 +1416,33 @@ static void interpret_standby(unsigned standby) printf(")\n"); } -struct xfermode_entry { - int val; - const char *name; +static const uint8_t xfermode_val[] ALIGN1 = { + 8, 9, 10, 11, 12, 13, 14, 15, + 16, 17, 18, 19, 20, 21, 22, 23, + 32, 33, 34, 35, 36, 37, 38, 39, + 64, 65, 66, 67, 68, 69, 70, 71 }; - -static const struct xfermode_entry xfermode_table[] = { - { 8, "pio0" }, - { 9, "pio1" }, - { 10, "pio2" }, - { 11, "pio3" }, - { 12, "pio4" }, - { 13, "pio5" }, - { 14, "pio6" }, - { 15, "pio7" }, - { 16, "sdma0" }, - { 17, "sdma1" }, - { 18, "sdma2" }, - { 19, "sdma3" }, - { 20, "sdma4" }, - { 21, "sdma5" }, - { 22, "sdma6" }, - { 23, "sdma7" }, - { 32, "mdma0" }, - { 33, "mdma1" }, - { 34, "mdma2" }, - { 35, "mdma3" }, - { 36, "mdma4" }, - { 37, "mdma5" }, - { 38, "mdma6" }, - { 39, "mdma7" }, - { 64, "udma0" }, - { 65, "udma1" }, - { 66, "udma2" }, - { 67, "udma3" }, - { 68, "udma4" }, - { 69, "udma5" }, - { 70, "udma6" }, - { 71, "udma7" }, - { 0, NULL } +/* NB: we save size by _not_ storing terninating NUL! */ +static const char xfermode_name[][5] ALIGN1 = { + "pio0", "pio1", "pio2", "pio3", "pio4", "pio5", "pio6", "pio7", + "sdma0","sdma1","sdma2","sdma3","sdma4","sdma5","sdma6","sdma7", + "mdma0","mdma1","mdma2","mdma3","mdma4","mdma5","mdma6","mdma7", + "udma0","udma1","udma2","udma3","udma4","udma5","udma6","udma7" }; -static int translate_xfermode(char * name) +static int translate_xfermode(const char *name) { - const struct xfermode_entry *tmp; - char *endptr; - int val = -1; + int val, i; - for (tmp = xfermode_table; tmp->name != NULL; ++tmp) { - if (!strcmp(name, tmp->name)) - return tmp->val; + for (i = 0; i < ARRAY_SIZE(xfermode_val); i++) { + if (!strncmp(name, xfermode_name[i], 5)) + if (strlen(name) <= 5) + return xfermode_val[i]; } - - val = strtol(name, &endptr, 10); - if (*endptr == '\0') + /* Negative numbers are invalid and are caught later */ + val = bb_strtoi(name, NULL, 10); + if (!errno) return val; - return -1; } @@ -1483,13 +1454,13 @@ static void interpret_xfermode(unsigned xfermode) else if (xfermode == 1) printf("default PIO mode, disable IORDY"); else if (xfermode >= 8 && xfermode <= 15) - printf("PIO flow control mode%u", xfermode-8); + printf("PIO flow control mode%u", xfermode - 8); else if (xfermode >= 16 && xfermode <= 23) - printf("singleword DMA mode%u", xfermode-16); + printf("singleword DMA mode%u", xfermode - 16); else if (xfermode >= 32 && xfermode <= 39) - printf("multiword DMA mode%u", xfermode-32); + printf("multiword DMA mode%u", xfermode - 32); else if (xfermode >= 64 && xfermode <= 71) - printf("UltraDMA mode%u", xfermode-64); + printf("UltraDMA mode%u", xfermode - 64); else printf("Unknown"); printf(")\n"); |