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cd74719101
1 changed files with 28 additions and 0 deletions
28
sys/src/cmd/auth/lib/private.c
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28
sys/src/cmd/auth/lib/private.c
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#include <u.h>
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#include <libc.h>
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#include <bio.h>
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#include <authsrv.h>
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#include "authcmdlib.h"
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static char *pmsg = "Warning! %s can't protect itself from debugging: %r\n";
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static char *smsg = "Warning! %s can't turn off swapping: %r\n";
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/* don't allow other processes to debug us and steal keys */
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void
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private(void)
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{
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int fd;
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char buf[64];
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snprint(buf, sizeof(buf), "#p/%d/ctl", getpid());
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fd = open(buf, OWRITE);
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if(fd < 0){
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fprint(2, pmsg, argv0);
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return;
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}
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if(fprint(fd, "private") < 0)
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fprint(2, pmsg, argv0);
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if(fprint(fd, "noswap") < 0)
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fprint(2, smsg, argv0);
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close(fd);
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}
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