From: Arseny Maslennikov <arseny@altlinux.org> To: devel@lists.altlinux.org Cc: Arseny Maslennikov <arseny@altlinux.org> Subject: [devel] [PATCH hasher-priv v3 4/7] Link with libsetproctitle by Dmitry V. Levin Date: Tue, 24 Aug 2021 11:24:33 +0300 Message-ID: <20210824082436.1555890-5-arseny@altlinux.org> (raw) In-Reply-To: <20210824082436.1555890-1-arseny@altlinux.org> This being a shared library is an implementation detail: to overcome the lack of such an interface on Linux, we need to run some preparation code before main() and pass argv/envp memory buffers to it. A function declared with __attribute__((constructor)) gets called with no arguments, we can't pass the argv/envp buffers to it, so we put an implementation of setproctitle(3) in a shared object and hijack its _init(). Signed-off-by: Arseny Maslennikov <arseny@altlinux.org> --- hasher-priv/Makefile | 3 ++- hasher-priv/hasher-priv.spec | 1 + 2 files changed, 3 insertions(+), 1 deletion(-) diff --git a/hasher-priv/Makefile b/hasher-priv/Makefile index 8ccf99d..a08f6a8 100644 --- a/hasher-priv/Makefile +++ b/hasher-priv/Makefile @@ -42,6 +42,7 @@ CPPFLAGS = -std=gnu99 -D_GNU_SOURCE $(CHDIRUID_FLAGS) \ CFLAGS = -pipe -O2 override CFLAGS += $(WARNINGS) LDLIBS = +server_LDLIBS = -lsetproctitle SRC = hasher-priv.c cmdline.c fds.c sockets.c logging.c communication.c xmalloc.c pass.c OBJ = $(SRC:.c=.o) @@ -65,7 +66,7 @@ $(PROJECT): $(OBJ) $(LINK.o) $^ $(LOADLIBES) $(LDLIBS) -o $@ hasher-privd: $(server_OBJ) - $(LINK.o) $^ $(LOADLIBES) $(LDLIBS) -o $@ + $(LINK.o) $^ $(LOADLIBES) $(LDLIBS) $(server_LDLIBS) -o $@ install: all $(MKDIR_P) -m710 $(DESTDIR)$(configdir)/user.d diff --git a/hasher-priv/hasher-priv.spec b/hasher-priv/hasher-priv.spec index 8ec0013..e21dec1 100644 --- a/hasher-priv/hasher-priv.spec +++ b/hasher-priv/hasher-priv.spec @@ -20,6 +20,7 @@ Obsoletes: pkg-build-priv Conflicts: hasher < 1.4.0 BuildPreReq: help2man, sisyphus_check >= 0:0.7.11 +BuildRequires: setproctitle-devel %description This package provides helpers for executing privileged operations -- 2.32.0
next prev parent reply other threads:[~2021-08-24 8:24 UTC|newest] Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-08-24 8:24 [devel] [PATCH hasher-priv v3 0/7] hasher-privd Arseny Maslennikov 2021-08-24 8:24 ` [devel] [PATCH hasher-priv v3 1/7] Turn hasher-priv into a daemon Arseny Maslennikov 2021-08-24 8:24 ` [devel] [PATCH hasher-priv v3 2/7] sockets: xsendmsg: get rid of SIGPIPE on socket writes Arseny Maslennikov 2021-08-24 8:24 ` [devel] [PATCH hasher-priv v3 3/7] chrootuid: explicitly reset signal mask before forking off payload Arseny Maslennikov 2021-12-01 19:23 ` Dmitry V. Levin 2021-12-03 15:03 ` Arseny Maslennikov 2021-12-03 16:06 ` Dmitry V. Levin 2021-08-24 8:24 ` Arseny Maslennikov [this message] 2021-08-24 8:24 ` [devel] [PATCH hasher-priv v3 5/7] daemon: set titles for subprocesses Arseny Maslennikov 2021-08-24 8:24 ` [devel] [PATCH hasher-priv v3 6/7] Add systemd and sysvinit service files Arseny Maslennikov 2021-08-24 8:24 ` [devel] [PATCH hasher-priv v3 7/7] Install hasher-priv without set ugids Arseny Maslennikov
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