FreeBSD Bugzilla – Attachment 184407 Details for
Bug 220779
getgroups result is affected by setegid
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test case demonstrating the behaviour
u.c (text/x-csrc), 546 bytes, created by
Michael Zuo
on 2017-07-16 17:52:16 UTC
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Description:
test case demonstrating the behaviour
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Creator:
Michael Zuo
Created:
2017-07-16 17:52:16 UTC
Size:
546 bytes
patch
obsolete
>#include <unistd.h> >#include <limits.h> >#include <stdio.h> >#include <err.h> > >int main(int argc, char **argv) { > gid_t gids[NGROUPS_MAX]; > int j, n = getgroups(NGROUPS_MAX, gids); > if (n == -1) > err(2, "getgroups"); > for (j = 0; j < n; j++) > printf("%d ", gids[j]); > printf("egid=%d\n", getegid()); > > if (setegid(getegid()+1) == -1) > err(3, "setegid"); > > n = getgroups(NGROUPS_MAX, gids); > if (n == -1) > err(2, "getgroups"); > for (j = 0; j < n; j++) > printf("%d ", gids[j]); > printf("egid=%d\n", getegid()); > > return gids[0] == getegid(); >} >
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bug 220779
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