Michael Brown ff0f860483 [libc] Use wall clock time as seed for the (non-cryptographic) RNG ... We currently use the number of timer ticks since power-on as a seed for the non-cryptographic RNG implemented by random(). Since iPXE is often executed directly after power-on, and since the timer tick resolution is generally low, this can often result in identical seed values being used on each cold boot attempt. As of commit 41f786c ("[settings] Add "unixtime" builtin setting to expose the current time"), the current wall-clock time is always available within the default build of iPXE. Use this time instead, to introduce variability between cold boot attempts on the same host. (Note that variability between different hosts is obtained by using the MAC address as an additional seed value.) This has no effect on the separate DRBG used by cryptographic code. Suggested-by: Heiko <heik0@xs4all.nl> Signed-off-by: Michael Brown <mcb30@ipxe.org>		2023-10-06 12:50:43 +01:00
..
acpi.c	[acpi] Allow for the possibility of overriding ACPI tables at link time	2022-03-24 12:58:52 +00:00
acpi_settings.c	[acpi] Allow for the possibility of overriding ACPI tables at link time	2022-03-24 12:58:52 +00:00
acpimac.c	[acpi] Expose system MAC address via ${sysmac} setting	2022-06-10 13:44:40 +01:00
ansicol.c	…
ansicoldef.c	…
ansiesc.c	…
archive.c	[image] Propagate trust flag to extracted archive images	2021-05-12 14:14:52 +01:00
asprintf.c	…
assert.c	…
base16.c	…
base64.c	[base64] Include terminating NUL within base64 character array	2021-06-07 13:20:02 +01:00
basename.c	…
bitmap.c	…
blockdev.c	…
blocktrans.c	[interface] Provide intf_insert() to insert a filter interface	2020-12-07 13:50:24 +00:00
cachedhcp.c	[netdevice] Allocate private data for each network upper-layer driver	2023-09-13 20:23:46 +01:00
console.c	[libc] Match standard prototype for putchar()	2021-06-07 13:26:01 +01:00
cpio.c	[image] Check delimiters when parsing command-line key-value arguments	2023-02-14 11:13:45 +00:00
ctype.c	…
cwuri.c	…
debug.c	[debug] Allow debug colourisation to be disabled	2016-01-12 15:39:14 +00:00
debug_md5.c	…
device.c	[init] Show startup and shutdown function names in debug messages	2019-01-25 14:53:43 +00:00
dma.c	[dma] Provide dma_umalloc() for allocating large DMA-coherent buffers	2020-11-29 11:25:40 +00:00
downloader.c	[downloader] Allow underlying downloads to provide detailed job progress	2017-09-05 23:23:22 +01:00
dummy_sanboot.c	[block] Allow use of a non-default EFI SAN boot filename	2017-04-12 15:58:05 +01:00
dynkeymap.c	[console] Support changing keyboard map at runtime	2022-02-16 14:06:33 +00:00
edd.c	…
errno.c	…
exec.c	[libc] Make sleep() interruptible	2016-03-22 16:18:42 +00:00
fault.c	…
fbcon.c	[fbcon] Support Unicode character output	2022-03-15 17:27:18 +00:00
fdt.c	[fdt] Add ability to parse a MAC address from a flattened device tree	2019-07-19 17:35:39 +01:00
fnrec.c	…
gdbserial.c	…
gdbstub.c	[gdb] Add support for x86_64	2016-03-22 08:44:32 +00:00
gdbudp.c	…
getkey.c	[efi] Work around broken UEFI keyboard drivers	2016-05-25 23:28:41 +01:00
getopt.c	…
hw.c	…
i82365.c	…
image.c	[image] Generalise concept of selected image	2023-05-17 14:42:03 +01:00
init.c	[init] Show startup and shutdown function names in debug messages	2019-01-25 14:53:43 +00:00
interface.c	[interface] Fix debug message values for temporary interfaces	2023-07-04 16:54:39 +01:00
iobuf.c	[dma] Move I/O buffer DMA operations to iobuf.h	2020-11-28 20:26:28 +00:00
iomap_virt.c	[ioapi] Split ioremap() out to a separate IOMAP API	2016-02-26 15:33:40 +00:00
isqrt.c	…
job.c	…
keymap.c	[console] Support changing keyboard map at runtime	2022-02-16 14:06:33 +00:00
linebuf.c	[linebuf] Support buffering of multiple lines	2015-07-28 16:59:11 +01:00
lineconsole.c	[syslog] Handle backspace characters	2017-06-13 11:54:41 +01:00
list.c	…
log.c	…
main.c	[test] Allow self-tests to report exit status when running under Linux	2015-08-21 15:46:28 +01:00
malloc.c	[malloc] Rename malloc_dma() to malloc_phys()	2020-11-05 19:13:52 +00:00
memmap_settings.c	[settings] Extend numerical setting tags to 64 bits	2017-05-22 13:54:13 +01:00
menu.c	…
monojob.c	[monojob] Display job status message, if present	2017-09-05 23:23:22 +01:00
netbios.c	[http] Allow for domain names within NTLM user names	2018-02-19 11:58:28 +00:00
null_acpi.c	[acpi] Allow for platforms that provide ACPI tables individually	2021-03-01 00:08:23 +00:00
null_nap.c	…
null_reboot.c	…
null_sanboot.c	[block] Allow use of a non-default EFI SAN boot filename	2017-04-12 15:58:05 +01:00
null_time.c	…
nvo.c	…
open.c	[uri] Make URI schemes case-insensitive	2021-07-01 16:32:46 +01:00
params.c	[params] Allow for arbitrary HTTP request headers to be specified	2023-03-01 12:20:02 +00:00
parseopt.c	[console] Restore compatibility with "--key" values in existing scripts	2023-07-07 15:14:00 +01:00
pc_kbd.c	…
pcmcia.c	…
pending.c	…
pinger.c	…
pixbuf.c	[pixbuf] Avoid potential division by zero	2017-03-22 14:11:19 +02:00
pool.c	[pool] Add a generic concept of a pooled connection	2015-07-28 16:37:00 +01:00
posix_io.c	…
process.c	…
profile.c	[profile] Prevent potential division by zero	2018-03-18 18:39:39 +02:00
quiesce.c	[block] Provide abstraction to allow system to be quiesced	2017-04-26 20:15:39 +01:00
random.c	[libc] Use wall clock time as seed for the (non-cryptographic) RNG	2023-10-06 12:50:43 +01:00
refcnt.c	…
resolv.c	[resolv] Use pass-through interfaces for name resolution multiplexer	2017-09-06 11:43:22 +01:00
sanboot.c	[block] Provide abstraction to allow system to be quiesced	2017-04-26 20:15:39 +01:00
serial.c	[init] Show startup and shutdown function names in debug messages	2019-01-25 14:53:43 +00:00
settings.c	[settings] Always process all settings applicators	2022-02-16 13:50:41 +00:00
string.c	[libc] Add strncasecmp()	2021-05-18 11:45:24 +01:00
stringextra.c	…
time.c	[time] Allow system clock to be adjusted at runtime	2016-06-13 15:29:05 +01:00
timer.c	[time] Add sleep_fixed() function to sleep without checking for Ctrl-C	2017-03-27 15:41:22 +03:00
uart.c	[serial] Check for UART existence in uart_select()	2015-07-31 11:19:19 +01:00
uri.c	[uri] Allow for relative URIs that include colons within the path	2022-01-13 15:03:22 +00:00
utf8.c	[utf8] Add ability to accumulate Unicode characters from UTF-8 bytes	2022-03-01 15:57:33 +00:00
uuid.c	[build] Return const char * from uuid_ntoa()	2017-01-22 13:45:00 +00:00
version.c	[efi] Include Secure Boot Advanced Targeting (SBAT) metadata	2022-01-13 14:12:44 +00:00
vsprintf.c	[libc] Print "<NULL>" for wide-character NULL strings	2016-04-12 11:53:06 +01:00
wchar.c	…
xfer.c	[interface] Fix debug message values for temporary interfaces	2023-07-04 16:54:39 +01:00
xferbuf.c	[build] Fix compiler warnings on some gcc versions	2015-07-27 15:21:17 +01:00