makefile: check for forbidden dirs

1 files changed, 28 insertions, 7 deletions

diff --git a/makefile b/makefile
index bf37f4b..b127cfe 100644
--- a/makefile
+++ b/makefile
@@ -7,6 +7,9 @@ TLBINPATH!=which latex | sed 's/\/latex//'
 TMPSOURCE?=""
 UPDATING!=curl -s ${BINREPO}/status.txt | grep updating= | sed 's/.*=//'
 
+DONT_TOUCH_DIRS:=${HOME}/bin /bin /sbin /usr/bin /usr/sbin /usr/X11R6/bin /usr/local/bin /usr/local/sbin
+
+
 .MAIN: update
 
 fetch:
@@ -14,9 +17,9 @@ fetch:
         @echo "The binaries are being updated.  Please re-run this command later."
 .else
         curl ${BINREPO}/amd64-openbsd${OPENBSD_VERSION}.tar.xz \
-                > ${TMPDIR}/amd64-openbsd${OPENBSD_VERSION}.tar.xz
+                -o ${TMPDIR}/amd64-openbsd${OPENBSD_VERSION}.tar.xz
         curl ${BINREPO}/amd64-openbsd${OPENBSD_VERSION}.tar.xz.asc \
-                > ${TMPDIR}/amd64-openbsd${OPENBSD_VERSION}.tar.xz.asc
+                -o ${TMPDIR}/amd64-openbsd${OPENBSD_VERSION}.tar.xz.asc
         gpg --verify ${TMPDIR}/amd64-openbsd${OPENBSD_VERSION}.tar.xz.asc
         unxz ${TMPDIR}/amd64-openbsd${OPENBSD_VERSION}.tar.xz
         mkdir ${TMPDIR}/bin \
@@ -33,11 +36,22 @@ update:
         @echo "The binaries are being updated.  Please re-run this command later."
 .else
         curl ${BINREPO}/amd64-openbsd${OPENBSD_VERSION}.tar.xz \
-                > ${TMPDIR}/amd64-openbsd${OPENBSD_VERSION}.tar.xz
+                -o ${TMPDIR}/amd64-openbsd${OPENBSD_VERSION}.tar.xz
         curl ${BINREPO}/amd64-openbsd${OPENBSD_VERSION}.tar.xz.asc \
-                > ${TMPDIR}/amd64-openbsd${OPENBSD_VERSION}.tar.xz.asc
+                -o ${TMPDIR}/amd64-openbsd${OPENBSD_VERSION}.tar.xz.asc
         gpg --verify ${TMPDIR}/amd64-openbsd${OPENBSD_VERSION}.tar.xz.asc
+.for DIR in ${DONT_TOUCH_DIRS}
+.if "${DIR}" == ${TLBINPATH}
+        @echo ""
+        @echo "This program will never affect a system directory such as ${TLBINPATH}"
+        @echo "To complete the update, you must replace by hand your binaries"
+        @echo "with those in ${TMPDIR}/amd64-openbsd${OPENBSD_VERSION}.tar.xz"
+        @echo "Exiting now."
+        exit 1
+.endif
+.endfor
 .if "${PREFIX}" == ${TLBINPATH}
+        @echo ""
         @echo "Looks good."
         @echo "Now do this to update the binaries:"
         @echo "1. Remove the binaries that are currently installed:"
@@ -45,10 +59,17 @@ update:
         @echo "2. Run this command:"
         @echo "   make TMPSOURCE=${TMPDIR} install"
 .else
+        @echo ""
         @echo "Looks like your TL binaries are in ${TLBINPATH}"
-        @echo "instead of ${PREFIX}"
-        @echo "To complete the update, you must replace by hand your binaries"
-        @echo "with those in ${TMPDIR}/amd64-openbsd${OPENBSD_VERSION}.tar.xz"
+        @echo "instead of the expected ${PREFIX}."
+        @echo "To complete the update, you must remove by hand your binaries."
+        @echo "******************************************************************************"
+        @echo "* CAUTION: You must first ensure that ${TLBINPATH} contains nothing"
+        @echo "* but the TeX Live binaries, otherwise you may damage your system permanently."
+        @echo "******************************************************************************"
+        @echo "Then do:"
+        @echo "1.  doas rm ${TLBINPATH}/*"
+        @echo "2.  make TMPSOURCE=${TMPDIR} PREFIX=${TLBINPATH} install"
 .endif
 .endif