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bspatch: simplify capsicumization

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Assume that user wants to run with capsicum support if he builds the software
with HAVE_CAPSICUM. Treat running application without capsicum in the kernel as
an error.

MFC after:	3 weeks
This commit is contained in:
Mariusz Zaborski 2018-11-07 21:01:14 +00:00
parent 179460e148
commit a25896ca12
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=340239
1 changed files with 15 additions and 19 deletions
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34
usr.bin/bsdiff/bspatch/bspatch.c
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@ -144,26 +144,22 @@ int main(int argc, char *argv[])
atexit(exit_cleanup);
#ifdef HAVE_CAPSICUM
if (cap_enter() < 0) {
/* Failed to sandbox, fatal if CAPABILITY_MODE enabled */
if (errno != ENOSYS)
err(1, "failed to enter security sandbox");
} else {
/* Capsicum Available */
cap_rights_init(&rights_ro, CAP_READ, CAP_FSTAT, CAP_SEEK);
cap_rights_init(&rights_wr, CAP_WRITE);
cap_rights_init(&rights_dir, CAP_UNLINKAT);
if (cap_enter() < 0)
err(1, "failed to enter security sandbox");
if (cap_rights_limit(fileno(f), &rights_ro) < 0 ||
cap_rights_limit(fileno(cpf), &rights_ro) < 0 ||
cap_rights_limit(fileno(dpf), &rights_ro) < 0 ||
cap_rights_limit(fileno(epf), &rights_ro) < 0 ||
cap_rights_limit(oldfd, &rights_ro) < 0 ||
cap_rights_limit(newfd, &rights_wr) < 0 ||
cap_rights_limit(dirfd, &rights_dir) < 0)
err(1, "cap_rights_limit() failed, could not restrict"
" capabilities");
}
cap_rights_init(&rights_ro, CAP_READ, CAP_FSTAT, CAP_SEEK);
cap_rights_init(&rights_wr, CAP_WRITE);
cap_rights_init(&rights_dir, CAP_UNLINKAT);
if (cap_rights_limit(fileno(f), &rights_ro) < 0 ||
cap_rights_limit(fileno(cpf), &rights_ro) < 0 ||
cap_rights_limit(fileno(dpf), &rights_ro) < 0 ||
cap_rights_limit(fileno(epf), &rights_ro) < 0 ||
cap_rights_limit(oldfd, &rights_ro) < 0 ||
cap_rights_limit(newfd, &rights_wr) < 0 ||
cap_rights_limit(dirfd, &rights_dir) < 0)
err(1, "cap_rights_limit() failed, could not restrict"
" capabilities");
#endif
/*