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Linux 2.6.4 Documentation/devices.txt

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This commit is contained in:
albert 2004-02-24 22:39:48 +00:00
parent fbadfaa850
commit 2fc41eefa8
1 changed files with 22 additions and 0 deletions
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22
proc/devname.c
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@ -129,11 +129,24 @@ static int driver_name(char *restrict const buf, unsigned maj, unsigned min){
return 1;
}
// major 204 is a mess -- "Low-density serial ports"
static const char low_density_names[][4] = {
"LU0", "LU1", "LU2", "LU3",
"FB0",
"SA0", "SA1", "SA2",
"SC0", "SC1", "SC2", "SC3",
"FW0", "FW1", "FW2", "FW3",
"AM0", "AM1", "AM2", "AM3", "AM4", "AM5", "AM6", "AM7",
"AM8", "AM9", "AM10", "AM11", "AM12", "AM13", "AM14", "AM15",
"DB0", "DB1", "DB2", "DB3", "DB4", "DB5", "DB6", "DB7",
};
/* Try to guess the device name (useful until /proc/PID/tty is added) */
static int guess_name(char *restrict const buf, unsigned maj, unsigned min){
struct stat sbuf;
int t0, t1;
unsigned tmpmin = min;
switch(maj){
case 4:
if(min<64){
@ -176,6 +189,15 @@ static int guess_name(char *restrict const buf, unsigned maj, unsigned min){
case 172: sprintf(buf, "/dev/ttyMX%d", min); break;
case 174: sprintf(buf, "/dev/ttySI%d", min); break;
case 188: sprintf(buf, "/dev/ttyUSB%d", min); break; /* bummer, 9-char */
case 204:
if(min >= sizeof low_density_names / sizeof low_density_names[0]) return 0;
sprintf(buf, "/dev/tty%s", low_density_names[min]);
break;
case 208: sprintf(buf, "/dev/ttyU%d", min); break;
case 216: sprintf(buf, "/dev/ttyUB%d", min); break;
case 224: sprintf(buf, "/dev/ttyY%d", min); break;
case 227: sprintf(buf, "/dev/3270/tty%d", min); break; /* bummer, HUGE */
case 229: sprintf(buf, "/dev/iseries/vtty%d", min); break; /* bummer, HUGE */
default: return 0;
}
if(stat(buf, &sbuf) < 0) return 0;