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发表于 2022-6-18 19:40:05
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#include <stdio.h>
{0 j) M. K% J: b# b; X& s2 z b#include <unistd.h>
; K( k* |/ t- P$ P& @+ b9 k#include <fcntl.h>
6 }3 E- S2 {6 C#include <errno.h>
$ P1 L5 r" R! s$ h#include <sys/ioctl.h>
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#define IOCMD_LOCK 0xC0204D017 U9 |' i6 n k$ d5 w: J2 F1 N; b
#define IOCMD_UNLOCK 0xC0204D02
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! f8 f* }* o. ~7 u3 j ~- ]! Y2 Jvoid usage(const char* app); }% |! [5 O$ S" h) }
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printf("%s -l <mtd name> ... lock mtd\n", app);
$ n. R& [; m4 u0 m& b& Z# _ printf("%s -u <mtd name> ... unlock mtd\n", app);- G0 t$ t( q* U4 P0 ]* P; N: V
}
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int main(int argc, char* argv[])
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const char* file = "/proc/wap_proc/mtd_protect";
\2 F- V: q, a1 ^9 ]" I2 J int fd, r;
/ y; d( ]+ g( R1 {# b7 {% H7 K* Y unsigned long cmd = IOCMD_UNLOCK;
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if(argc < 3)
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usage(argv[0]);
& C' G. p& F5 A. ^8 U) I1 z return 1;: ^& i1 g5 K0 v& y ^) }
}
0 [8 n1 a. D, o# \7 |; }% U" @+ y if('-' == argv[1][0])
! X; W; @) K K2 K& v8 j! s J {
" S( }* P; g2 l7 u if('l' == argv[1][1])+ j( w8 F& r8 C
cmd = IOCMD_LOCK;0 I9 u, O& u/ t
else if('u' != argv[1][1])
! m% p7 r9 F' w* k. H {usage(argv[0]); return 1;}
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usage(argv[0]);# s' P& y" z9 d: H- R- i
return 1;
' @2 |" Z+ f1 z3 c8 E }
8 V* R. @- S5 P fd = open(file, O_RDWR);) H* l8 ~1 u) ?
if(fd < 0)
' P9 _- y3 t, k: T) r {
q3 B6 L3 P; f! ]$ u3 I$ @ printf("Can not open: %s\n", file);
) N3 _0 g/ M- ]9 c return 1;6 C0 n, |% t1 e$ ]" [2 ?, H0 g
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r = ioctl(fd, cmd, argv[2]);- {8 f8 [2 X4 B
close(fd);
3 h* Y3 ^" B0 c, l: W; A printf("%s '%s' %s. errno:%u\n", & W! y1 ^" k4 t0 l0 W" Z5 s
(IOCMD_UNLOCK == cmd ? "Unlock" : "Lock"),( l. L# y+ ?* M% N
argv[2], (r < 0 ? "failed" : "success"), errno);
8 K: I# d% ^4 a$ G+ k return 0;
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