def check_if_file_exists(filepath):
#try to open the file specified, if it fails, then it doens't exist
try:
lindfd = lind_fs_calls.open_syscall(filepath, O_RDONLY, 0)
lind_fs_calls.close_syscall(lindfd)
#file found, return true
return True
except lind_fs_calls.SyscallError:
#file not found, return false
return False
#print "in copy " + source+ "..." + str(mode) + "..." + str(stat.S_IRWXU)
lindfd = lind_fs_calls.open_syscall(path + "/" + new_name, O_CREAT | O_RDWR, mode)
except lind_fs_calls.SyscallError, e:
print "Could not open the local file. Error: %s" % e
return -1
#try to write the file content to the newly file
try:
lind_fs_calls.write_syscall(lindfd, filedata.read())
except lind_fs_calls.SyscallError, e:
print "Could not write file. Error: %s" % e
return -1
lind_fs_calls.close_syscall(lindfd)
#pass in a path, check if it exists in the virtual fs. if it doesnt, it creates the path
def check_path_exists(path):
path_list = path.split("/")[0:-1]#get each directory in the path, excluding the new file's name
lind_fs_calls.chdir_syscall("/")#start at root
path_str = "/"#this string will hold the whole path of the destination file (excluding the filename itself)
#loop through each dir in the path
for p in path_list:
if(p == ""):
continue
path_str += (p + "/")#concat the dir to the full path string
#try to chdir (if it fails, means the directory doesnt exist)
try:
lind_fs_calls.chdir_syscall(p)
