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tftpd: Use setres*id() if available

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POSIX apparently doesn't clearly specify the behavior of the saved ID
when calling setre*id(). If the system has setres*id() then use it to
make absolutely sure that the ID changes cannot be undone.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
This commit is contained in:
H. Peter Anvin 2024-05-29 18:10:41 -07:00
parent 99112f0206
commit 5e8d5c24b2
2 changed files with 10 additions and 4 deletions
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2
configure.ac
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@ -86,7 +86,9 @@ AC_CHECK_FUNCS(setsid)
AC_CHECK_FUNCS(recvmsg)
AC_CHECK_FUNCS(ftruncate)
AC_CHECK_FUNCS(setreuid)
AC_CHECK_FUNCS(setresuid)
AC_CHECK_FUNCS(setregid)
AC_CHECK_FUNCS(setresgid)
AC_CHECK_FUNCS(initgroups)
AC_CHECK_FUNCS(setgroups)
AC_CHECK_FUNCS(sigaction)