picnoir/Systemd
1
0
Fork 0
Code Issues Pull requests Projects Releases Wiki Activity

random-seed: drop falling back to O_WRONLY if O_RDWR on /dev/urandom doesn't work

Browse source 
There's no reason why writing should work if reading and writing
doesn't. Let's simplify this hence. /dev/urandom is generally an r/w
device, and everything else would be a serious system misconfiguration.
This commit is contained in:
Lennart Poettering 2019-07-22 10:24:50 +02:00
parent 15d961bf53
commit c6127c3996
1 changed files with 2 additions and 7 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

9
src/random-seed/random-seed.c
View file

@ -67,13 +67,8 @@ static int run(int argc, char *argv[]) {
write_seed_file = true;
random_fd = open("/dev/urandom", O_RDWR|O_CLOEXEC|O_NOCTTY, 0600);
if (random_fd < 0) {
write_seed_file = false;
random_fd = open("/dev/urandom", O_WRONLY|O_CLOEXEC|O_NOCTTY, 0600);
if (random_fd < 0)
return log_error_errno(errno, "Failed to open /dev/urandom: %m");
}
if (random_fd < 0)
return log_error_errno(errno, "Failed to open /dev/urandom: %m");
read_seed_file = true;