FreeCalypso > hg > freecalypso-tools
annotate libpwon/forkoff.c @ 718:098fea21ba13
doc/Host-tools-overview: tiffs-mkfs description updated
The first version of tiffs-mkfs did not include a journal file in the created
FFS, expecting the firmware to create it on first boot. All historical
firmwares prior to a recent FC fix (2020-05) contain a bug in that code path,
thus images made with the first version of tiffs-mkfs were only acceptable to
very recent FC firmwares. tiffs-mkfs has now been extended to include an empty
journal in the created FFS, thus the restriction of working with recent fw only
has been lifted.
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Sun, 23 Aug 2020 04:55:02 +0000 |
parents | cef70d53fc5e |
children | 7d1df6d831e4 |
rev | line source |
---|---|
571
41b3e010808d
libpwon started, compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
1 #include <sys/types.h> |
575
cef70d53fc5e
loadtools: new -P boot control mechanism implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
571
diff
changeset
|
2 #include <signal.h> |
571
41b3e010808d
libpwon started, compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
3 #include <stdio.h> |
41b3e010808d
libpwon started, compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
4 #include <stdlib.h> |
41b3e010808d
libpwon started, compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
5 #include <unistd.h> |
41b3e010808d
libpwon started, compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
6 |
41b3e010808d
libpwon started, compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
7 extern char bootctrl_pwon_cmd[]; |
41b3e010808d
libpwon started, compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
8 |
41b3e010808d
libpwon started, compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
9 static char shell_pathname[] = "/bin/sh"; |
41b3e010808d
libpwon started, compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
10 |
41b3e010808d
libpwon started, compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
11 void |
41b3e010808d
libpwon started, compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
12 fork_exec_pwon_cmd() |
41b3e010808d
libpwon started, compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
13 { |
41b3e010808d
libpwon started, compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
14 int i; |
41b3e010808d
libpwon started, compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
15 |
41b3e010808d
libpwon started, compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
16 i = vfork(); |
41b3e010808d
libpwon started, compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
17 if (i < 0) { |
41b3e010808d
libpwon started, compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
18 perror("vfork"); |
41b3e010808d
libpwon started, compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
19 exit(1); |
41b3e010808d
libpwon started, compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
20 } |
41b3e010808d
libpwon started, compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
21 if (i) |
41b3e010808d
libpwon started, compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
22 return; |
41b3e010808d
libpwon started, compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
23 execl(shell_pathname, "sh", "-c", bootctrl_pwon_cmd, (char *) 0); |
41b3e010808d
libpwon started, compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
24 perror(shell_pathname); |
41b3e010808d
libpwon started, compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
25 _exit(1); |
41b3e010808d
libpwon started, compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
26 } |
575
cef70d53fc5e
loadtools: new -P boot control mechanism implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
571
diff
changeset
|
27 |
cef70d53fc5e
loadtools: new -P boot control mechanism implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
571
diff
changeset
|
28 pwon_if_needed() |
cef70d53fc5e
loadtools: new -P boot control mechanism implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
571
diff
changeset
|
29 { |
cef70d53fc5e
loadtools: new -P boot control mechanism implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
571
diff
changeset
|
30 if (!bootctrl_pwon_cmd[0]) |
cef70d53fc5e
loadtools: new -P boot control mechanism implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
571
diff
changeset
|
31 return(0); |
cef70d53fc5e
loadtools: new -P boot control mechanism implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
571
diff
changeset
|
32 signal(SIGCHLD, SIG_IGN); |
cef70d53fc5e
loadtools: new -P boot control mechanism implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
571
diff
changeset
|
33 fork_exec_pwon_cmd(); |
cef70d53fc5e
loadtools: new -P boot control mechanism implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
571
diff
changeset
|
34 return(1); |
cef70d53fc5e
loadtools: new -P boot control mechanism implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
571
diff
changeset
|
35 } |