diff options
Diffstat (limited to 'util/nvmutil/nvmutil.c')
| -rw-r--r-- | util/nvmutil/nvmutil.c | 17 |
1 files changed, 10 insertions, 7 deletions
diff --git a/util/nvmutil/nvmutil.c b/util/nvmutil/nvmutil.c index 8495836f..e6f43da6 100644 --- a/util/nvmutil/nvmutil.c +++ b/util/nvmutil/nvmutil.c @@ -1051,15 +1051,18 @@ rlong(void) if (fd < 0) fd = open("/dev/random", O_RDONLY | O_BINARY | O_NONBLOCK); - nr = rw_file_exact(fd, (unsigned char *)&rval, - sizeof(unsigned long), 0, IO_READ, LOOP_EAGAIN, - LOOP_EINTR, MAX_ZERO_RW_RETRY, OFF_ERR); + if (fd > -1) { - if (x_i_close(fd) < 0) - err(errno, "Can't close randomness fd"); + nr = rw_file_exact(fd, (unsigned char *)&rval, + sizeof(unsigned long), 0, IO_READ, LOOP_EAGAIN, + LOOP_EINTR, MAX_ZERO_RW_RETRY, OFF_ERR); - if (nr == sizeof(unsigned long)) - return rval; + if (x_i_close(fd) < 0) + err(errno, "Can't close randomness fd"); + + if (nr == sizeof(unsigned long)) + return rval; + } return mix; } |