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Use `install -C' instead of lots of shell commands to install ld.so

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as atomically as possible.

(Immutable targets can't be renamed without opening a window when
neither the source nor the target is immutable.  Perhaps there
should be a rename_immutable syscall to do this if unsetting the
immutable flags would work.)
This commit is contained in:
Bruce Evans 1996-09-12 03:42:54 +00:00
parent caa05533fb
commit 87d0dcafca
2 changed files with 4 additions and 26 deletions
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15
gnu/usr.bin/ld/rtld/Makefile
View File

@ -1,4 +1,4 @@
# $Id: Makefile,v 1.18 1996/01/11 17:49:55 phk Exp $
# $Id: Makefile,v 1.19 1996/05/07 23:15:58 wosch Exp $
PROG= ld.so
SRCS= mdprologue.S rtld.c malloc.c shlib.c etc.c md.c
@ -11,6 +11,7 @@ ASFLAGS+=-k
DPADD+= ${LIBC:S/c.a/c_pic.a/} ${LIBC:S/c.a/gcc_pic.a/}
LDADD+= -lc_pic -lgcc_pic
BINDIR= /usr/libexec
INSTALLFLAGS+= -fschg -C # -C to install as atomically as possible
MLINKS= rtld.1 ld.so.1
.PATH: $(LDDIR) $(LDDIR)/$(MACHINE)
@ -18,16 +19,4 @@ MLINKS= rtld.1 ld.so.1
$(PROG): ${OBJS} ${DPADD}
$(LD) -o $(PROG) $(LDFLAGS) $(OBJS) $(LDADD)
realinstall:
${INSTALL} ${COPY} ${STRIP} -o ${BINOWN} -g ${BINGRP} -m ${BINMODE} \
${INSTALLFLAGS} ${PROG} ${DESTDIR}${BINDIR}/${PROG}.new
test -f ${DESTDIR}${BINDIR}/${PROG}.old && \
chflags noschg ${DESTDIR}${BINDIR}/${PROG}.old || \
:
-chflags noschg ${DESTDIR}${BINDIR}/${PROG}
-ln -f ${DESTDIR}${BINDIR}/${PROG} ${DESTDIR}${BINDIR}/${PROG}.old
mv -f ${DESTDIR}${BINDIR}/${PROG}.new ${DESTDIR}${BINDIR}/${PROG}
chflags schg ${DESTDIR}${BINDIR}/${PROG}
-rm -f ${DESTDIR}${BINDIR}/${PROG}.old
.include <bsd.prog.mk>

15
libexec/rtld-aout/Makefile
View File

@ -1,4 +1,4 @@
# $Id: Makefile,v 1.18 1996/01/11 17:49:55 phk Exp $
# $Id: Makefile,v 1.19 1996/05/07 23:15:58 wosch Exp $
PROG= ld.so
SRCS= mdprologue.S rtld.c malloc.c shlib.c etc.c md.c
@ -11,6 +11,7 @@ ASFLAGS+=-k
DPADD+= ${LIBC:S/c.a/c_pic.a/} ${LIBC:S/c.a/gcc_pic.a/}
LDADD+= -lc_pic -lgcc_pic
BINDIR= /usr/libexec
INSTALLFLAGS+= -fschg -C # -C to install as atomically as possible
MLINKS= rtld.1 ld.so.1
.PATH: $(LDDIR) $(LDDIR)/$(MACHINE)
@ -18,16 +19,4 @@ MLINKS= rtld.1 ld.so.1
$(PROG): ${OBJS} ${DPADD}
$(LD) -o $(PROG) $(LDFLAGS) $(OBJS) $(LDADD)
realinstall:
${INSTALL} ${COPY} ${STRIP} -o ${BINOWN} -g ${BINGRP} -m ${BINMODE} \
${INSTALLFLAGS} ${PROG} ${DESTDIR}${BINDIR}/${PROG}.new
test -f ${DESTDIR}${BINDIR}/${PROG}.old && \
chflags noschg ${DESTDIR}${BINDIR}/${PROG}.old || \
:
-chflags noschg ${DESTDIR}${BINDIR}/${PROG}
-ln -f ${DESTDIR}${BINDIR}/${PROG} ${DESTDIR}${BINDIR}/${PROG}.old
mv -f ${DESTDIR}${BINDIR}/${PROG}.new ${DESTDIR}${BINDIR}/${PROG}
chflags schg ${DESTDIR}${BINDIR}/${PROG}
-rm -f ${DESTDIR}${BINDIR}/${PROG}.old
.include <bsd.prog.mk>