/var/mod/root # fstyp /dev/sda1
vfat
/var/mod/root # strace mount -t vfat -o rw /dev/sda1 /var/media/usb
execve("/bin/mount", ["mount", "-t", "vfat", "-o", "rw", "/dev/sda1", "/var/media/usb"], [/* 139 vars */]) = 0
svr4_syscall() = -1 ERRNO_4090 (Unknown error 4090)
open("/mod/lib/libcrypt.so.0", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/lib/libcrypt.so.0", O_RDONLY) = 3
old_mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x2aaae000
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\10\0\1\0\0\0\360\4\0\0004\0\0\0"..., 4096) = 4096
old_mmap(NULL, 147456, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x2aabd000
old_mmap(0x2aabd000, 10196, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED, 3, 0) = 0x2aabd000
old_mmap(0x2aacf000, 2084, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 3, 0x2000) = 0x2aacf000
old_mmap(0x2aad0000, 68880, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x2aad0000
close(3) = 0
munmap(0x2aaae000, 4096) = 0
open("/mod/lib/libgcc_s.so.1", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/lib/libgcc_s.so.1", O_RDONLY) = 3
old_mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x2aaae000
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\10\0\1\0\0\0\300\30\0\0004\0\0\0"..., 4096) = 4096
old_mmap(NULL, 122880, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x2aae1000
old_mmap(0x2aae1000, 53876, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED, 3, 0) = 0x2aae1000
old_mmap(0x2aafe000, 1020, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 3, 0xd000) = 0x2aafe000
close(3) = 0
munmap(0x2aaae000, 4096) = 0
open("/mod/lib/libc.so.0", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/lib/libc.so.0", O_RDONLY) = 3
old_mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x2aaae000
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\10\0\1\0\0\0\260\272\0\0004\0\0\0"..., 4096) = 4096
old_mmap(NULL, 462848, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x2aaff000
old_mmap(0x2aaff000, 370340, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED, 3, 0) = 0x2aaff000
old_mmap(0x2ab6a000, 4452, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 3, 0x5b000) = 0x2ab6a000
old_mmap(0x2ab6c000, 15096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x2ab6c000
close(3) = 0
mprotect(0x2aaff000, 370340, PROT_READ|PROT_WRITE|PROT_EXEC) = 0
munmap(0x2aaae000, 4096) = 0
mprotect(0x2aaff000, 370340, PROT_READ|PROT_EXEC) = 0
ioctl(0, TIOCNXCL, {B38400 opost isig icanon echo ...}) = 0
ioctl(1, TIOCNXCL, {B38400 opost isig icanon echo ...}) = 0
getuid() = 0
brk(0) = 0x492bb4
brk(0x493bb4) = 0x493bb4
brk(0x494000) = 0x494000
stat64(0x7fde9385, 0x7fde89a0) = 0
mount("/dev/sda1", "/var/media/usb", "vfat"..., MS_SILENT, NULL) = -1 ENOENT (No such file or directory)
ioctl(2147483647, TIOCNXCL, 0x7fde8860) = -1 EBADF (Bad file descriptor)
brk(0x495000) = 0x495000
write(2, "mount: mounting /dev/sda1 on /va"..., 78mount: mounting /dev/sda1 on /var/media/usb failed: No such file or directory
) = 78
exit(-1) = ?
/var/mod/root #