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#include <errno.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <sys/sysmacros.h>
#include <stdlib.h>
#include <unistd.h>
struct devnum {
char * name;
short major, minor;
int isChar;
};
static struct devnum devices[] = {
{ "aztcd", 29, 0, 0 },
{ "pcd", 46, 0, 0 },
{ "cdu31a", 15, 0, 0 },
{ "cdu535", 24, 0, 0 },
{ "cm206cd", 32, 0, 0 },
{ "fd0", 2, 0, 0 },
{ "fd1", 2, 1, 0 },
{ "gscd", 16, 0, 0 },
{ "lp0", 6, 0, 1 },
{ "lp1", 6, 1, 1 },
{ "lp2", 6, 2, 1 },
{ "mcd", 23, 0, 0 },
{ "mcdx", 20, 0, 0 },
{ "nst0", 9, 128, 1 },
{ "optcd", 17, 0, 0 },
{ "psaux", 10, 1, 1 },
{ "sbpcd", 25, 0, 0 },
{ "scd0", 11, 0, 0 },
{ "scd1", 11, 1, 0 },
{ "sjcd", 18, 0, 0 },
{ "ttyS0", 4, 64, 1 },
{ "ttyS1", 4, 65, 1 },
{ "ttyS2", 4, 66, 1 },
{ "ttyS3", 4, 67, 1 },
};
int numDevices = sizeof(devices) / sizeof(struct devnum);
int devMakeInode(char * devName, char * path) {
int i;
int major, minor;
int type;
char *ptr;
char *dir;
if (devName[0] == 's' && devName[1] == 'd') {
type = S_IFBLK;
major = 8;
minor = (devName[2] - 'a') << 4;
if (devName[3] && devName[4])
minor += (devName[3] - '0') * 10 + (devName[4] - '0');
else if (devName[3])
minor += (devName[3] - '0');
} else if (devName[0] == 'm' && devName[1] == 'd') {
type = S_IFBLK;
major = 9;
minor = atoi(devName + 2);
} else if (!strncmp(devName, "loop", 4)) {
type = S_IFBLK;
major = 7;
minor = atoi(devName + 4);
} else if (devName[0] == 'h' && devName[1] == 'd') {
type = S_IFBLK;
if (devName[2] == 'a')
major = 3, minor = 0;
else if (devName[2] == 'b')
major = 3, minor = 64;
else if (devName[2] == 'c')
major = 22, minor = 0;
else if (devName[2] == 'd')
major = 22, minor = 64;
else if (devName[2] == 'e')
major = 33, minor = 0;
else if (devName[2] == 'f')
major = 33, minor = 64;
else if (devName[2] == 'g')
major = 34, minor = 0;
else if (devName[2] == 'h')
major = 34, minor = 64;
else
return -1;
if (devName[3] && devName[4])
minor += (devName[3] - '0') * 10 + (devName[4] - '0');
else if (devName[3])
minor += (devName[3] - '0');
} else if (!strncmp(devName, "ram", 3)) {
type = S_IFBLK;
major = 1;
minor = 1;
if (devName[3])
minor += devName[3] - '1';
} else if (!strncmp(devName, "rd/", 3)) {
/* dac 960 "/rd/c0d0{p1}" */
type = S_IFBLK;
major = 48 + devName[4] - '0'; /* controller */
minor = (devName[6] - '0') * 8; /* disk */
if (strlen(devName) > 7) /* partition */
minor += devName[8] - '0';
} else if (!strncmp(devName, "ida/", 4)) {
/* Compaq Smart Array "ida/c0d0{p1} */
type = S_IFBLK;
major = 72 + devName[5] - '0'; /* controller */
minor = (devName[7] - '0') * 16; /* disk */
if (strlen(devName) > 8) /* partition */
minor += atoi(devName + 9);
} else {
for (i = 0; i < numDevices; i++) {
if (!strcmp(devices[i].name, devName)) break;
}
if (i == numDevices) return -1;
major = devices[i].major;
minor = devices[i].minor;
if (devices[i].isChar)
type = S_IFCHR;
else
type = S_IFBLK;
}
ptr = path;
i = 0;
while (*ptr)
if (*ptr++ == '/')
i++;
if (i > 2) {
dir = alloca(strlen(path) + 1);
strcpy(dir, path);
ptr = dir + (strlen(path) - 1);
while (*ptr != '/')
*ptr-- = '\0';
mkdir(dir, 0644);
}
unlink(path);
if (mknod(path, type | 0600, makedev(major, minor))) {
return -2;
}
return 0;
}
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