X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=src%2Fsysv-generator%2Fsysv-generator.c;h=09ade0dc3a308c4557f484e03a8cb7f2087f30d7;hp=a2f853380cc49796a3ebeaee88aeff432c9e5b7a;hb=a986501b9059b72e8deced262554fbdd1ab9da17;hpb=79008bddf679a5e0900369950eb346c9fa687107 diff --git a/src/sysv-generator/sysv-generator.c b/src/sysv-generator/sysv-generator.c index a2f853380..09ade0dc3 100644 --- a/src/sysv-generator/sysv-generator.c +++ b/src/sysv-generator/sysv-generator.c @@ -112,6 +112,32 @@ 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); + + if (streq(service, alias)) { + log_error("Ignoring creation of an alias %s for itself", service); + return 0; + } + + 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; @@ -142,15 +168,22 @@ static int generate_unit_file(SysvStub *s) { if (!unit) return log_oom(); - f = fopen(unit, "wxe"); - if (!f) { - log_error("Failed to create unit file %s: %m", unit); - return -errno; + /* We might already have a symlink with the same name from a Provides:, + * or from backup files like /etc/init.d/foo.bak. Real scripts always win, + * so remove an existing link */ + if (is_symlink(unit)) { + log_warning("Overwriting existing symlink %s with real service", unit); + (void) unlink(unit); } + f = fopen(unit, "wxe"); + if (!f) + return log_error_errno(errno, "Failed to create unit file %s: %m", unit); + fprintf(f, "# Automatically generated by systemd-sysv-generator\n\n" "[Unit]\n" + "Documentation=man:systemd-sysv-generator(8)\n" "SourcePath=%s\n" "Description=%s\n", s->path, s->description); @@ -175,9 +208,6 @@ static int generate_unit_file(SysvStub *s) { "RemainAfterExit=%s\n", yes_no(!s->pid_file)); - if (s->sysv_start_priority > 0) - fprintf(f, "SysVStartPriority=%d\n", s->sysv_start_priority); - if (s->pid_file) fprintf(f, "PIDFile=%s\n", s->pid_file); @@ -192,7 +222,7 @@ static int generate_unit_file(SysvStub *s) { STRV_FOREACH(p, s->wanted_by) { r = add_symlink(s->name, *p); if (r < 0) - log_unit_error(s->name, "Failed to create 'Wants' symlink to %s: %s", *p, strerror(-r)); + log_unit_error_errno(s->name, r, "Failed to create 'Wants' symlink to %s: %m", *p); } return 0; @@ -243,9 +273,9 @@ static int sysv_translate_facility(const char *name, const char *filename, char "time", SPECIAL_TIME_SYNC_TARGET, }; - unsigned i; - char *r; + char *filename_no_sh, *e, *r; const char *n; + unsigned i; assert(name); assert(_r); @@ -267,6 +297,14 @@ static int sysv_translate_facility(const char *name, const char *filename, char goto finish; } + /* strip ".sh" suffix from file name for comparison */ + filename_no_sh = strdupa(filename); + e = endswith(filename, ".sh"); + if (e) { + *e = '\0'; + filename = filename_no_sh; + } + /* If we don't know this name, fallback heuristics to figure * out whether something is a target or a service alias. */ @@ -313,6 +351,8 @@ static int load_sysv(SysvStub *s) { if (!f) return errno == ENOENT ? 0 : -errno; + log_debug("Loading SysV script %s", s->path); + while (!feof(f)) { char l[LINE_MAX], *t; @@ -454,14 +494,15 @@ static int load_sysv(SysvStub *s) { return -ENOMEM; r = sysv_translate_facility(n, basename(s->path), &m); - if (r < 0) return r; - if (r == 0) continue; - if (unit_name_to_type(m) != UNIT_SERVICE) { + if (unit_name_to_type(m) == UNIT_SERVICE) { + log_debug("Adding Provides: alias '%s' for '%s'", m, s->name); + r = add_alias(s->name, m); + } else { /* NB: SysV targets * which are provided * by a service are @@ -698,29 +739,30 @@ static int enumerate_sysv(LookupPaths lp, Hashmap *all_services) { d = opendir(*path); if (!d) { if (errno != ENOENT) - log_warning("opendir(%s) failed: %m", *path); + log_warning_errno(errno, "opendir(%s) failed: %m", *path); continue; } while ((de = readdir(d))) { - SysvStub *service; - struct stat st; _cleanup_free_ char *fpath = NULL, *name = NULL; + _cleanup_free_ SysvStub *service = NULL; + struct stat st; int r; - if (ignore_file(de->d_name)) + if (hidden_file(de->d_name)) continue; - fpath = strjoin(*path, "/", de->d_name, NULL); - if (!fpath) - return log_oom(); - - if (stat(fpath, &st) < 0) + if (fstatat(dirfd(d), de->d_name, &st, AT_SYMLINK_NOFOLLOW) < 0) { + log_warning_errno(errno, "stat() failed on %s/%s: %m", *path, de->d_name); continue; + } if (!(st.st_mode & S_IXUSR)) continue; + if (!S_ISREG(st.st_mode)) + continue; + name = sysv_translate_name(de->d_name); if (!name) return log_oom(); @@ -728,6 +770,10 @@ static int enumerate_sysv(LookupPaths lp, Hashmap *all_services) { if (hashmap_contains(all_services, name)) continue; + fpath = strjoin(*path, "/", de->d_name, NULL); + if (!fpath) + return log_oom(); + service = new0(SysvStub, 1); if (!service) return log_oom(); @@ -741,6 +787,7 @@ static int enumerate_sysv(LookupPaths lp, Hashmap *all_services) { return log_oom(); name = fpath = NULL; + service = NULL; } } @@ -773,7 +820,7 @@ static int set_dependencies_from_rcnd(LookupPaths lp, Hashmap *all_services) { d = opendir(path); if (!d) { if (errno != ENOENT) - log_warning("opendir(%s) failed: %m", path); + log_warning_errno(errno, "opendir(%s) failed: %m", path); continue; } @@ -781,7 +828,7 @@ static int set_dependencies_from_rcnd(LookupPaths lp, Hashmap *all_services) { while ((de = readdir(d))) { int a, b; - if (ignore_file(de->d_name)) + if (hidden_file(de->d_name)) continue; if (de->d_name[0] != 'S' && de->d_name[0] != 'K') @@ -923,7 +970,9 @@ int main(int argc, char *argv[]) { q = load_sysv(service); if (q < 0) continue; + } + HASHMAP_FOREACH(service, all_services, j) { q = fix_order(service, all_services); if (q < 0) continue;