From b7e7184634d573fb73143210962acce205f37f61 Mon Sep 17 00:00:00 2001 From: Michael Biebl Date: Mon, 5 Jan 2015 09:49:44 +0100 Subject: sysv-generator: handle Provides: for non-virtual facility names The list of provided facility names as specified via Provides: in the LSB header was originally implemented by adding those facilities to the Names= property via unit_add_name(). In commit 95ed3294c632f5606327149f10cef1eb34422862 the internal SysV support was replaced by a generator and support for parsing the Names= option had been removed from the unit file parsing in v186. As a result, Provides: for non-virtual facility was dropped when introducing the sysv-generator. Since quite a few SysV init scripts still use that functionality (at least in distros like Debian which have a large body of SysV init scripts), add back support by making those facility names available via symlinks to the unit filename to ensure correct orderings between SysV init scripts which use those facility names. Bug-Debian: https://bugs.debian.org/774335 --- src/sysv-generator/sysv-generator.c | 25 ++++++++++++++++++++++++- 1 file changed, 24 insertions(+), 1 deletion(-) diff --git a/src/sysv-generator/sysv-generator.c b/src/sysv-generator/sysv-generator.c index 6730843843..f78ddebf46 100644 --- a/src/sysv-generator/sysv-generator.c +++ b/src/sysv-generator/sysv-generator.c @@ -112,6 +112,27 @@ static int add_symlink(const char *service, const char *where) { return 1; } +static int add_alias(const char *service, const char *alias) { + _cleanup_free_ char *link = NULL; + int r; + + assert(service); + assert(alias); + + link = strjoin(arg_dest, "/", alias, NULL); + if (!link) + return log_oom(); + + r = symlink(service, link); + if (r < 0) { + if (errno == EEXIST) + return 0; + return -errno; + } + + return 1; +} + static int generate_unit_file(SysvStub *s) { char **p; _cleanup_fclose_ FILE *f = NULL; @@ -457,7 +478,9 @@ static int load_sysv(SysvStub *s) { if (r == 0) continue; - if (unit_name_to_type(m) != UNIT_SERVICE) { + if (unit_name_to_type(m) == UNIT_SERVICE) { + r = add_alias(s->name, m); + } else { /* NB: SysV targets * which are provided * by a service are -- cgit v1.2.3