def wc(fd, name):
l = 0
w = 0
c = 0
inword = False
# while((n = read(fd, buf, sizeof(buf))) > 0)
while True:
n, buf = read(fd, 512)
if n <= 0:
break
for i in range(n):
c += 1
if buf[i] == "\n":
l += 1
if strchr(" \r\t\n\v", buf[i]):
inword = False
elif not inword:
w += 1
inword = True
if n < 0:
printf(1, "wc: read error\n")
exit_(1)
printf(1, "%d %d %d %s\n", l, w, c, name)
def main(argv, argc):
#static char buf[100];
#int fd;
# Assumes three file descriptors open.
# while((fd = open("console", O_RDWR)) >= 0){
while True:
fd = open_("console", O_RDWR)
if fd < 0:
break
if fd >= 3:
close(fd)
break
# Read and run input commands.
# while(getcmd(buf, sizeof(buf)) >= 0){
while True:
n, buf = getcmd(100)
if n < 0:
break
if buf[0] == "c" and buf[1] == "d" and buf[2] == " ":
# Clumsy but will have to do for now.
# Chdir has no effect on the parent if run in the child.
buf = buf[:strlen(buf) - 1] # chop \n
if chdir(buf[3:]) < 0:
printf(2, "cannot cd %s\n", buf[3:])
continue
fork1(runcmd, parsecmd(buf))
# wait()
exit_()
def main(argc, argv):
if argc < 2:
ls(".")
exit_()
for i in range(1, argc):
ls(argv[i])
exit_()
def main(argc, argv):
if argc != 3:
printf(2, "Usage: ln old new\n")
exit_()
if link(argv[1], argv[2]) < 0:
printf(2, "link %s %s: failed\n", argv[1], argv[2])
exit_()
def main(argc, argv):
if argc < 2: # @@@ C source has < 1
printf(2, "usage: kill pid...\n")
exit_()
for i in range(1, argc):
kill(atoi(argv[i]))
exit_()
def main(argc, argv):
if argc < 2:
printf(2, "Usage: rm files...\n")
exit_()
for i in range(1, argc):
if unlink(argv[i]) < 0:
printf(2, "rm: %s failed to delete\n", argv[i])
break
exit_()
def main(argc, argv):
if argc < 2:
printf(2, "Usage: mkdir files...\n")
exit_()
for i in range(1, argc):
if mkdir(argv[i]) < 0:
printf(2, "mkdir: %s failed to create\n", argv[i])
break
exit_()
def opentest():
printf(stdout, "open test\n")
fd = open_("echo", 0)
if fd < 0:
printf(stdout, "open echo failed!\n")
exit_()
close(fd)
fd = open_("doesnotexist", 0)
if fd >= 0:
printf(stdout, "open doesnotexist succeeded!\n")
exit_()
printf(stdout, "open test ok\n")
def cat(fd):
# while((n = read(fd, buf, sizeof(buf))) > 0)
while True:
n, buf = read(fd, 512)
if n <= 0:
break
write(1, buf, n)
if n < 0:
printf(1, "cat: read error\n") # @@@ should that be 2?
exit_(1)
def forktest():
printf(1, "fork test\n")
for n in range(1000):
pid = fork()
if pid < 0:
break
if pid == 0:
exit_()
if n == 1000:
printf(1, "fork claimed to work 1000 times!\n")
exit_()
while n > 0:
if wait() < 0:
printf(1, "wait stopped early\n")
exit_(1)
n -= 1
if wait() != -1:
printf(1, "wait got too many\n")
exit_(1)
printf(1, "fork test OK\n")
def main(argc, argv):
printf(1, "usertests starting\n")
if open_("usertests.ran", 0) >= 0:
printf(1, "already ran user tests -- rebuild fs.img\n")
exit_()
close(open_("usertests.ran", O_CREATE))
opentest()
writetest()
writetest1()
createtest()
# mem()
# pipe1()
# preempt()
# exitwait()
#
# rmdot()
# fourteen()
# bigfile()
# subdir()
# concreate()
# linktest()
# unlinkread()
# createdelete()
# twofiles()
# sharedfd()
# dirfile()
# iref()
# forktest()
# bigdir()
exectest()
exit_()
def main(argc, argv):
if argc <= 1:
printf(2, "usage: grep pattern [file ...]\n")
exit_()
pattern = argv[1]
if argc <= 2:
grep(pattern, 0)
exit_()
for i in range(2, argc):
fd = open_(argv[i], 0)
if fd < 0:
printf(1, "grep: cannot open %s\n", argv[i])
exit_()
grep(pattern, fd)
close(fd)
exit_()
def main(argc, argv):
if argc <= 1:
wc(0, "")
exit_()
for i in range(1, argc):
fd = open_(argv[i], 0)
if fd < 0:
printf(1, "wc: cannot open %s\n", argv[i]) # @@@ xv6 had 'cat' for 'wc'
exit_()
wc(fd, argv[i])
close(fd)
exit_()
def main(argc, argv):
if argc <= 1:
cat(0)
exit_()
for i in range(1, argc):
fd = open_(argv[i], 0)
if fd < 0:
printf(1, "cat: cannot open %s\n", argv[i]) # @@@ should that be 2?
exit_()
cat(fd)
close(fd)
exit_()
def main(argc, argv):
if fork() > 0:
sleep(5) # Let child exit before parent
exit_()
def main(argc, argv):
forktest()
exit_()
def exectest():
printf(stdout, "exec test\n")
if exec_("echo", echoargv) < 0:
printf(stdout, "exec echo failed\n")
exit_()
def runcmd(cmd):
p = [0, 0]
if cmd == 0:
exit_()
if cmd.type == EXEC:
ecmd = cmd
if ecmd.argv[0] == 0:
exit_()
exec_(ecmd.argv[0], ecmd.argv)
printf(2, "exec %s failed\n", ecmd.argv[0])
elif cmd.type == REDIR:
rcmd = cmd
close(rcmd.fd)
if open_(rcmd.file, rcmd.mode) < 0:
printf(2, "open %s failed\n", rcmd.file)
exit_()
runcmd(rcmd.cmd)
elif cmd.type == LIST:
lcmd = cmd
# if fork1() == 0:
# runcmd(lcmd.left)
# wait()
# runcmd(lcmd.right)
fork1(runcmd, lcmd.left)
wait()
runcmd(lcmd.right)
elif cmd.type == PIPE:
pcmd = cmd
if pipe(p) < 0:
panic("pipe")
if fork1() == 0:
close(1)
dup(p[1])
close(p[0])
close(p[1])
runcmd(pcmd.left)
if fork1() == 0:
close(0)
dup(p[0])
close(p[0])
close(p[1])
runcmd(pcmd.right)
close(p[0])
close(p[1])
wait()
wait()
elif cmd.type == BACK:
bcmd = cmd
if fork1() == 0:
runcmd(bcmd.cmd)
else:
panic("runcmd")
exit_()
def panic(s):
printf(2, "%s\n", s)
exit_()
def writetest1():
buf = "\0" * 2048
printf(stdout, "big files test\n")
fd = open_("big", O_CREATE | O_RDWR)
if fd < 0:
printf(stdout, "error: creat big failed!\n")
exit_()
for i in range(MAXFILE):
buf = chr(i % 256) + buf[1:]
if write(fd, buf, 512) != 512:
printf(stdout, "error: write big file failed\n", i)
exit_()
close(fd)
fd = open_("big", O_RDONLY)
if fd < 0:
printf(stdout, "error: open big failed!\n")
exit_()
n = 0
while True:
i, buf = read(fd, 512)
if i == 0:
if n == MAXFILE - 1:
printf(stdout, "read only %d blocks from big", n)
exit_()
break
elif i != 512:
printf(stdout, "read failed %d\n", i)
exit_()
if buf[0] != chr(n % 256):
printf(stdout, "read content of block %d is %d\n", n, buf[0])
exit_()
n += 1
close(fd)
if unlink("big") < 0:
printf(stdout, "unlink big failed\n")
exit_()
printf(stdout, "big files ok\n")
def writetest():
printf(stdout, "small file test\n")
fd = open_("small", O_CREATE | O_RDWR)
if fd >= 0:
printf(stdout, "creat small succeeded; ok\n")
else:
printf(stdout, "error: creat small failed!\n")
exit_()
for i in range(100):
if write(fd, "aaaaaaaaaa", 10) != 10:
printf(stdout, "error: write aa %d new file failed\n", i)
exit_()
if write(fd, "bbbbbbbbbb", 10) != 10:
printf(stdout, "error: write bb %d new file failed\n", i)
exit_()
printf(stdout, "writes ok\n")
close(fd)
fd = open_("small", O_RDONLY)
if fd >= 0:
printf(stdout, "open small succeeded ok\n")
else:
printf(stdout, "error: open small failed!\n")
exit_()
i, buf = read(fd, 2000)
if i == 2000:
printf(stdout, "read succeeded ok\n")
else:
printf(stdout, "read failed\n")
exit_()
close(fd)
if unlink("small") < 0:
printf(stdout, "unlink small failed\n")
exit_()
printf(stdout, "small file test ok\n")
def main(argc, argv):
for i in range(1, argc):
printf(1, "%s%s", argv[i], " " if i + 1 < argc else "\n")
exit_()