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#include <errno.h>
#include <fcntl.h>
#include <netdb.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/mount.h>
#include <sys/stat.h>
#include <asm/page.h>
#include <sys/swap.h>
#include <sys/sysmacros.h>
#include <sys/statfs.h>
#include <unistd.h>
#include "../isys/imount.h"
#include "../isys/isys.h"
#include "commands.h"
#include "mount_by_label.h"
#include "../isys/cpio.h"
int mygethostbyname(char * host, struct in_addr * address) {
struct hostent * hostinfo;
hostinfo = gethostbyname(host);
if (!hostinfo) return 1;
memcpy(address, hostinfo->h_addr_list[0], hostinfo->h_length);
return 0;
}
static int copyfd(int to, int from);
static int copyfd(int to, int from) {
char buf[1024];
int size;
while ((size = read(from, buf, sizeof(buf))) > 0) {
if (write(to, buf, size) != size) {
fprintf(stderr, "error writing output: %s\n", strerror(errno));
return 1;
}
}
if (size < 0) {
fprintf(stderr, "error reading input: %s\n", strerror(errno));
return 1;
}
return 0;
}
static int catFile(char * filename) {
int fd;
int rc;
fd = open(filename, O_RDONLY);
if (fd < 0) {
fprintf(stderr, "cannot open %s: %s\n", filename, strerror(errno));
return 1;
}
rc = copyfd(1, fd);
close(fd);
return rc;
}
#define MOUNT_USAGE fprintf(stderr, "usage: mount -t <fs> <device> <dir>\n" \
" (if /dev/ is left off the device name, a " \
"temporary node will be created)\n")
int mountCommand(int argc, char ** argv) {
char * dev, * dir;
char * fs, * buf;
if (argc < 2) {
return catFile("/proc/mounts");
} else if (argc == 3) {
if (strchr(argv[1], ':'))
fs = "nfs";
else
fs = "ext2";
dev = argv[1];
dir = argv[2];
} else if (argc != 5) {
MOUNT_USAGE;
return 1;
} else {
if (strcmp(argv[1], "-t")) {
MOUNT_USAGE;
return 1;
}
fs = argv[2];
dev = argv[3];
dir = argv[4];
}
if (!strncmp(dev, "LABEL=", 6)) {
dev = get_spec_by_volume_label(dev + 6);
} else if (!strncmp(dev, "UUID=", 5)) {
dev = get_spec_by_uuid(dev + 5);
}
if (!strncmp(dev, "/dev/", 5) && access(dev, X_OK)) {
dev += 5;
buf = alloca(strlen(dev) + 10);
sprintf(buf, "/tmp/%s", dev);
devMakeInode(dev, buf);
dev = buf;
}
if (doPwMount(dev, dir, fs, 0, 1, NULL, NULL)) {
if (doPwMount(dev, dir, fs, 1, 1, NULL, NULL)) {
fprintf(stderr, "mount failed: %s\n", strerror(errno));
return 1;
}
}
return 0;
}
int umountCommand(int argc, char ** argv) {
if (argc != 2) {
fprintf(stderr, "umount expects a single argument\n");
return 1;
}
if (umount(argv[1])) {
fprintf(stderr, "error unmounting %s: %s\n", argv[1], strerror(errno));
return 1;
}
return 0;
}
int mknodCommand(int argc, char ** argv) {
int major, minor;
char * path;
int mode = 0600;
char *end;
if (argc != 5 && argc != 2) {
fprintf(stderr, "usage: mknod <path> [b|c] <major> <minor> or mknod <path>\n");
return 1;
}
path = argv[1];
if (argc == 2) {
end = path + strlen(path) - 1;
while (end > path && *end != '/') end--;
if (*end == '/') end++;
if (devMakeInode(end, path)) {
printf("failed to make inode for device %s\n", end);
return 1;
}
return 0;
}
if (!strcmp(argv[2], "b"))
mode |= S_IFBLK;
else if (!strcmp(argv[2], "c"))
mode |= S_IFCHR;
else {
fprintf(stderr, "unknown node type %s\n", argv[2]);
return 1;
}
major = strtol(argv[3], &end, 0);
if (*end) {
fprintf(stderr, "bad major number %s\n", argv[3]);
return 1;
}
minor = strtol(argv[4], &end, 0);
if (*end) {
fprintf(stderr, "bad minor number %s\n", argv[4]);
return 1;
}
if (mknod(path, mode, makedev(major, minor))) {
fprintf(stderr, "mknod failed: %s\n", strerror(errno));
return 1;
}
return 0;
}
int uncpioCommand(int argc, char ** argv) {
int rc;
const char * fail;
gzFile cfd;
if (argc != 1) {
fprintf(stderr, "uncpio reads from stdin");
return 1;
}
cfd = gunzip_dopen(0);
rc = myCpioInstallArchive(cfd, NULL, 0, NULL, NULL, &fail);
gunzip_close(cfd);
if (rc) {
fprintf(stderr, "cpio failed on %s: ", fail);
if (rc & CPIOERR_CHECK_ERRNO)
fprintf(stderr, "%s\n", strerror(errno));
else
fprintf(stderr, "(internal)\n");
}
return (rc != 0);
}
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