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发表于 2022-6-18 19:40:05
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#include <stdio.h>5 Q$ m( B: d4 e; b) t
#include <unistd.h>7 N- u9 ~( i4 M2 k) X$ _) {
#include <fcntl.h> _+ l+ p3 H' i+ O
#include <errno.h>1 y* M5 I! s! U
#include <sys/ioctl.h>: D* t& r: H& H1 N- `
1 T6 G, y Z2 u+ B- t5 d l#define IOCMD_LOCK 0xC0204D01
2 @1 f0 I, Y& a! Z W#define IOCMD_UNLOCK 0xC0204D02
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void usage(const char* app)
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printf("%s -l <mtd name> ... lock mtd\n", app);+ ?" b2 F( L+ B' D; e( }) A
printf("%s -u <mtd name> ... unlock mtd\n", app);
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4 D: x6 u2 a4 M* C6 gint main(int argc, char* argv[])
! J' M! l1 ~" V{
) e7 I% r8 l( F4 S! d2 t/ V, e const char* file = "/proc/wap_proc/mtd_protect";
1 H. c, H# u+ A3 a& C( H int fd, r;+ Z0 r, X; G5 j7 X$ T( ~
unsigned long cmd = IOCMD_UNLOCK;/ G: C. I# K1 M3 P2 {8 g; [$ O
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if(argc < 3)/ H9 ` A2 [6 G5 M8 x
{
# U+ V; ]5 w' q d& s' H usage(argv[0]);
5 @, O2 ^# `, p6 q/ N return 1;
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if('-' == argv[1][0])9 Y" ]8 g' F. k. @3 g
{
: K G' g* D! E; k; D; E% `: p8 w1 N if('l' == argv[1][1])
( }% i5 ?, t0 q+ f$ O cmd = IOCMD_LOCK;/ u7 W) h' Y1 c0 P/ B6 E* P( y
else if('u' != argv[1][1])- E" O7 _8 @! {. l) P" n6 O
{usage(argv[0]); return 1;}
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else
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usage(argv[0]);$ ]0 q) ~/ I, G- L
return 1;. n( X; z. e$ G/ T" Q. Z" O& v/ U
}
; [5 x1 y- @, }9 |6 f fd = open(file, O_RDWR);
6 m; k0 B7 S1 Y# Y) c if(fd < 0)3 B" ~0 n0 B. M( ]! z4 ^
{
# S# A: G- F) ^# O4 S printf("Can not open: %s\n", file);
2 D6 A# Z/ p' j& E% _ return 1;) i& f; u9 m: E# G( I* H. v
}! b1 D% J" s2 c
r = ioctl(fd, cmd, argv[2]);; h" `$ s) B+ t7 x: O* O
close(fd);
$ g# f. z& s% P3 A& \! }, S printf("%s '%s' %s. errno:%u\n",
9 z7 U& Y3 I/ G2 ~7 {3 l! y (IOCMD_UNLOCK == cmd ? "Unlock" : "Lock"),. {) n) M0 y& Z. h
argv[2], (r < 0 ? "failed" : "success"), errno);2 m" _! P( ]/ l3 t; D1 P
return 0;: e! r( L: a3 R6 u& ~2 _5 f0 p
}
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