X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=src%2Fdelta%2Fdelta.c;h=96a9fa5ee14e0378ab643c8b29790f29cfddeaf7;hp=65e720e4eb9165bf1e14105e53c56eb9a851b3ff;hb=6b01f1d3911bd7c7eadbb8a3b4375bd3ac05c98f;hpb=7e8d5761ecd4e8bc8f93b1f21861cac2a39a78a1 diff --git a/src/delta/delta.c b/src/delta/delta.c index 65e720e4e..96a9fa5ee 100644 --- a/src/delta/delta.c +++ b/src/delta/delta.c @@ -4,6 +4,7 @@ This file is part of systemd. Copyright 2012 Lennart Poettering + Copyright 2013 Zbigniew Jędrzejewski-Szmek systemd is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by @@ -31,55 +32,153 @@ #include "log.h" #include "pager.h" #include "build.h" +#include "strv.h" + +static const char prefixes[] = + "/etc\0" + "/run\0" + "/usr/local/lib\0" + "/usr/local/share\0" + "/usr/lib\0" + "/usr/share\0" +#ifdef HAVE_SPLIT_USR + "/lib\0" +#endif + ; + +static const char suffixes[] = + "sysctl.d\0" + "tmpfiles.d\0" + "modules-load.d\0" + "binfmt.d\0" + "systemd/system\0" + "systemd/user\0" + "systemd/system-preset\0" + "systemd/user-preset\0" + "udev/rules.d\0" + "modprobe.d\0"; + +static const char have_dropins[] = + "systemd/system\0" + "systemd/user\0"; static bool arg_no_pager = false; +static int arg_diff = -1; + +static enum { + SHOW_MASKED = 1 << 0, + SHOW_EQUIVALENT = 1 << 1, + SHOW_REDIRECTED = 1 << 2, + SHOW_OVERRIDDEN = 1 << 3, + SHOW_UNCHANGED = 1 << 4, + SHOW_EXTENDED = 1 << 5, + + SHOW_DEFAULTS = + (SHOW_MASKED | SHOW_EQUIVALENT | SHOW_REDIRECTED | SHOW_OVERRIDDEN | SHOW_EXTENDED) +} arg_flags = 0; + +static void pager_open_if_enabled(void) { + + if (arg_no_pager) + return; + + pager_open(false); +} static int equivalent(const char *a, const char *b) { - char *x, *y; - int r; + _cleanup_free_ char *x = NULL, *y = NULL; x = canonicalize_file_name(a); if (!x) return -errno; y = canonicalize_file_name(b); - if (!y) { - free(x); + if (!y) return -errno; - } - r = path_equal(x, y); - free(x); - free(y); + return path_equal(x, y); +} + +static int notify_override_masked(const char *top, const char *bottom) { + if (!(arg_flags & SHOW_MASKED)) + return 0; + + printf("%s%s%s %s %s %s\n", + ansi_highlight_red(), "[MASKED]", ansi_highlight_off(), + top, draw_special_char(DRAW_ARROW), bottom); + return 1; +} + +static int notify_override_equivalent(const char *top, const char *bottom) { + if (!(arg_flags & SHOW_EQUIVALENT)) + return 0; + + printf("%s%s%s %s %s %s\n", + ansi_highlight_green(), "[EQUIVALENT]", ansi_highlight_off(), + top, draw_special_char(DRAW_ARROW), bottom); + return 1; +} + +static int notify_override_redirected(const char *top, const char *bottom) { + if (!(arg_flags & SHOW_REDIRECTED)) + return 0; + + printf("%s%s%s %s %s %s\n", + ansi_highlight(), "[REDIRECTED]", ansi_highlight_off(), + top, draw_special_char(DRAW_ARROW), bottom); + return 1; +} + +static int notify_override_overridden(const char *top, const char *bottom) { + if (!(arg_flags & SHOW_OVERRIDDEN)) + return 0; + + printf("%s%s%s %s %s %s\n", + ansi_highlight(), "[OVERRIDDEN]", ansi_highlight_off(), + top, draw_special_char(DRAW_ARROW), bottom); + return 1; +} + +static int notify_override_extended(const char *top, const char *bottom) { + if (!(arg_flags & SHOW_EXTENDED)) + return 0; - return r; + printf("%s%s%s %s %s %s\n", + ansi_highlight(), "[EXTENDED]", ansi_highlight_off(), + top, draw_special_char(DRAW_ARROW), bottom); + return 1; +} + +static int notify_override_unchanged(const char *f) { + if (!(arg_flags & SHOW_UNCHANGED)) + return 0; + + printf("[UNCHANGED] %s\n", f); + return 1; } static int found_override(const char *top, const char *bottom) { - char *dest; + _cleanup_free_ char *dest = NULL; int k; pid_t pid; assert(top); assert(bottom); - if (null_or_empty_path(top) > 0) { - printf(ANSI_HIGHLIGHT_RED_ON "[MASK]" ANSI_HIGHLIGHT_OFF " %s → %s\n", top, bottom); - goto finish; - } + if (null_or_empty_path(top) > 0) + return notify_override_masked(top, bottom); k = readlink_malloc(top, &dest); if (k >= 0) { if (equivalent(dest, bottom) > 0) - printf(ANSI_HIGHLIGHT_GREEN_ON "[EQUIVALENT]" ANSI_HIGHLIGHT_OFF " %s → %s\n", top, bottom); + return notify_override_equivalent(top, bottom); else - printf(ANSI_HIGHLIGHT_ON "[REDIRECT]" ANSI_HIGHLIGHT_OFF " %s → %s\n", top, bottom); - - free(dest); - goto finish; + return notify_override_redirected(top, bottom); } - printf(ANSI_HIGHLIGHT_ON "[OVERRIDE]" ANSI_HIGHLIGHT_OFF " %s → %s\n", top, bottom); + k = notify_override_overridden(top, bottom); + if (!arg_diff) + return k; putchar('\n'); @@ -99,135 +198,225 @@ static int found_override(const char *top, const char *bottom) { putchar('\n'); -finish: + return k; +} + +static int enumerate_dir_d(Hashmap *top, Hashmap *bottom, Hashmap *drops, const char *toppath, const char *drop) { + _cleanup_free_ char *unit = NULL; + _cleanup_free_ char *path = NULL; + _cleanup_strv_free_ char **list = NULL; + char **file; + char *c; + int r; + + assert(!endswith(drop, "/")); + + path = strjoin(toppath, "/", drop, NULL); + if (!path) + return -ENOMEM; + + log_debug("Looking at %s", path); + + unit = strdup(drop); + if (!unit) + return -ENOMEM; + + c = strrchr(unit, '.'); + if (!c) + return -EINVAL; + *c = 0; + + r = get_files_in_directory(path, &list); + if (r < 0){ + log_error("Failed to enumerate %s: %s", path, strerror(-r)); + return r; + } + + STRV_FOREACH(file, list) { + Hashmap *h; + int k; + char *p; + char *d; + + if (!endswith(*file, ".conf")) + continue; + + p = strjoin(path, "/", *file, NULL); + if (!p) + return -ENOMEM; + d = p + strlen(toppath) + 1; + log_debug("Adding at top: %s %s %s", d, draw_special_char(DRAW_ARROW), p); + k = hashmap_put(top, d, p); + if (k >= 0) { + p = strdup(p); + if (!p) + return -ENOMEM; + d = p + strlen(toppath) + 1; + } else if (k != -EEXIST) { + free(p); + return k; + } + + log_debug("Adding at bottom: %s %s %s", d, draw_special_char(DRAW_ARROW), p); + free(hashmap_remove(bottom, d)); + k = hashmap_put(bottom, d, p); + if (k < 0) { + free(p); + return k; + } + + h = hashmap_get(drops, unit); + if (!h) { + h = hashmap_new(string_hash_func, string_compare_func); + if (!h) + return -ENOMEM; + hashmap_put(drops, unit, h); + unit = strdup(unit); + if (!unit) + return -ENOMEM; + } + + p = strdup(p); + if (!p) + return -ENOMEM; + + log_debug("Adding to drops: %s %s %s %s %s", + unit, draw_special_char(DRAW_ARROW), basename(p), draw_special_char(DRAW_ARROW), p); + k = hashmap_put(h, basename(p), p); + if (k < 0) { + free(p); + if (k != -EEXIST) + return k; + } + } return 0; } -static int enumerate_dir(Hashmap *top, Hashmap *bottom, const char *path) { - DIR *d; - int r = 0; +static int enumerate_dir(Hashmap *top, Hashmap *bottom, Hashmap *drops, const char *path, bool dropins) { + _cleanup_closedir_ DIR *d; assert(top); assert(bottom); + assert(drops); assert(path); + log_debug("Looking at %s", path); + d = opendir(path); if (!d) { if (errno == ENOENT) return 0; - log_error("Failed to enumerate %s: %m", path); + log_error("Failed to open %s: %m", path); return -errno; } for (;;) { - struct dirent *de, buf; + struct dirent *de; int k; char *p; - k = readdir_r(d, &buf, &de); - if (k != 0) { - r = -k; - goto finish; - } - + errno = 0; + de = readdir(d); if (!de) - break; + return -errno; + + dirent_ensure_type(d, de); + + if (dropins && de->d_type == DT_DIR && endswith(de->d_name, ".d")) + enumerate_dir_d(top, bottom, drops, path, de->d_name); if (!dirent_is_file(de)) continue; - p = join(path, "/", de->d_name, NULL); - if (!p) { - r = -ENOMEM; - goto finish; - } - - path_kill_slashes(p); + p = strjoin(path, "/", de->d_name, NULL); + if (!p) + return -ENOMEM; - k = hashmap_put(top, path_get_file_name(p), p); + log_debug("Adding at top: %s %s %s", basename(p), draw_special_char(DRAW_ARROW), p); + k = hashmap_put(top, basename(p), p); if (k >= 0) { p = strdup(p); - if (!p) { - r = -ENOMEM; - goto finish; - } + if (!p) + return -ENOMEM; } else if (k != -EEXIST) { free(p); - r = k; - goto finish; + return k; } - free(hashmap_remove(bottom, path_get_file_name(p))); - k = hashmap_put(bottom, path_get_file_name(p), p); + log_debug("Adding at bottom: %s %s %s", basename(p), draw_special_char(DRAW_ARROW), p); + free(hashmap_remove(bottom, basename(p))); + k = hashmap_put(bottom, basename(p), p); if (k < 0) { free(p); - r = k; - goto finish; + return k; } } - -finish: - closedir(d); - - return r; } -static int process_suffix(const char *prefixes, const char *suffix) { +static int process_suffix(const char *suffix, const char *onlyprefix) { const char *p; char *f; - Hashmap *top, *bottom; + Hashmap *top, *bottom, *drops; + Hashmap *h; + char *key; int r = 0, k; - Iterator i; + Iterator i, j; int n_found = 0; + bool dropins; - assert(prefixes); assert(suffix); + assert(!startswith(suffix, "/")); + assert(!strstr(suffix, "//")); - top = hashmap_new(string_hash_func, string_compare_func); - if (!top) { - r = -ENOMEM; - goto finish; - } + dropins = nulstr_contains(have_dropins, suffix); + top = hashmap_new(string_hash_func, string_compare_func); bottom = hashmap_new(string_hash_func, string_compare_func); - if (!bottom) { + drops = hashmap_new(string_hash_func, string_compare_func); + if (!top || !bottom || !drops) { r = -ENOMEM; goto finish; } NULSTR_FOREACH(p, prefixes) { - char *t; + _cleanup_free_ char *t = NULL; - t = join(p, "/", suffix, NULL); + t = strjoin(p, "/", suffix, NULL); if (!t) { r = -ENOMEM; goto finish; } - k = enumerate_dir(top, bottom, t); - if (k < 0) + k = enumerate_dir(top, bottom, drops, t, dropins); + if (r == 0) r = k; - - log_debug("Looking at %s", t); - free(t); } - HASHMAP_FOREACH(f, top, i) { + HASHMAP_FOREACH_KEY(f, key, top, i) { char *o; - o = hashmap_get(bottom, path_get_file_name(f)); + o = hashmap_get(bottom, key); assert(o); - if (path_equal(o, f)) - continue; - - k = found_override(f, o); - if (k < 0) - r = k; + if (!onlyprefix || startswith(o, onlyprefix)) { + if (path_equal(o, f)) { + notify_override_unchanged(f); + } else { + k = found_override(f, o); + if (k < 0) + r = k; + else + n_found += k; + } + } - n_found ++; + h = hashmap_get(drops, key); + if (h) + HASHMAP_FOREACH(o, h, j) + if (!onlyprefix || startswith(o, onlyprefix)) + n_found += notify_override_extended(f, o); } finish: @@ -235,46 +424,99 @@ finish: hashmap_free_free(top); if (bottom) hashmap_free_free(bottom); - + if (drops) { + HASHMAP_FOREACH_KEY(h, key, drops, i){ + hashmap_free_free(hashmap_remove(drops, key)); + hashmap_remove(drops, key); + free(key); + } + hashmap_free(drops); + } return r < 0 ? r : n_found; } -static int process_suffix_chop(const char *prefixes, const char *suffix) { +static int process_suffixes(const char *onlyprefix) { + const char *n; + int n_found = 0, r; + + NULSTR_FOREACH(n, suffixes) { + r = process_suffix(n, onlyprefix); + if (r < 0) + return r; + else + n_found += r; + } + return n_found; +} + +static int process_suffix_chop(const char *arg) { const char *p; - assert(prefixes); - assert(suffix); + assert(arg); - if (!path_is_absolute(suffix)) - return process_suffix(prefixes, suffix); + if (!path_is_absolute(arg)) + return process_suffix(arg, NULL); /* Strip prefix from the suffix */ NULSTR_FOREACH(p, prefixes) { - if (startswith(suffix, p)) { - suffix += strlen(p);; + const char *suffix = startswith(arg, p); + if (suffix) { suffix += strspn(suffix, "/"); - return process_suffix(prefixes, suffix); + if (*suffix) + return process_suffix(suffix, NULL); + else + return process_suffixes(arg); } } - log_error("Invalid suffix specification %s.", suffix); + log_error("Invalid suffix specification %s.", arg); return -EINVAL; } -static void help(void) { +static int help(void) { printf("%s [OPTIONS...] [SUFFIX...]\n\n" "Find overridden configuration files.\n\n" " -h --help Show this help\n" " --version Show package version\n" - " --no-pager Do not pipe output into a pager\n", + " --no-pager Do not pipe output into a pager\n" + " --diff[=1|0] Show a diff when overridden files differ\n" + " -t --type=LIST... Only display a selected set of override types\n", program_invocation_short_name); + + return 0; +} + +static int parse_flags(const char *flag_str, int flags) { + char *w, *state; + size_t l; + + FOREACH_WORD(w, l, flag_str, state) { + if (strneq("masked", w, l)) + flags |= SHOW_MASKED; + else if (strneq ("equivalent", w, l)) + flags |= SHOW_EQUIVALENT; + else if (strneq("redirected", w, l)) + flags |= SHOW_REDIRECTED; + else if (strneq("overridden", w, l)) + flags |= SHOW_OVERRIDDEN; + else if (strneq("unchanged", w, l)) + flags |= SHOW_UNCHANGED; + else if (strneq("extended", w, l)) + flags |= SHOW_EXTENDED; + else if (strneq("default", w, l)) + flags |= SHOW_DEFAULTS; + else + return -EINVAL; + } + return flags; } static int parse_argv(int argc, char *argv[]) { enum { ARG_NO_PAGER = 0x100, + ARG_DIFF, ARG_VERSION }; @@ -282,7 +524,9 @@ static int parse_argv(int argc, char *argv[]) { { "help", no_argument, NULL, 'h' }, { "version", no_argument, NULL, ARG_VERSION }, { "no-pager", no_argument, NULL, ARG_NO_PAGER }, - { NULL, 0, NULL, 0 } + { "diff", optional_argument, NULL, ARG_DIFF }, + { "type", required_argument, NULL, 't' }, + {} }; int c; @@ -290,7 +534,7 @@ static int parse_argv(int argc, char *argv[]) { assert(argc >= 1); assert(argv); - while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0) { + while ((c = getopt_long(argc, argv, "ht:", options, NULL)) >= 0) { switch (c) { @@ -300,7 +544,6 @@ static int parse_argv(int argc, char *argv[]) { case ARG_VERSION: puts(PACKAGE_STRING); - puts(DISTRIBUTION); puts(SYSTEMD_FEATURES); return 0; @@ -308,12 +551,39 @@ static int parse_argv(int argc, char *argv[]) { arg_no_pager = true; break; + case 't': { + int f; + f = parse_flags(optarg, arg_flags); + if (f < 0) { + log_error("Failed to parse flags field."); + return -EINVAL; + } + arg_flags = f; + break; + } + + case ARG_DIFF: + if (!optarg) + arg_diff = 1; + else { + int b; + + b = parse_boolean(optarg); + if (b < 0) { + log_error("Failed to parse diff boolean."); + return -EINVAL; + } else if (b) + arg_diff = 1; + else + arg_diff = 0; + } + break; + case '?': return -EINVAL; default: - log_error("Unknown option code %c", c); - return -EINVAL; + assert_not_reached("Unhandled option"); } } @@ -321,29 +591,6 @@ static int parse_argv(int argc, char *argv[]) { } int main(int argc, char *argv[]) { - - const char prefixes[] = - "/etc\0" - "/run\0" - "/usr/local/lib\0" - "/usr/local/share\0" - "/usr/lib\0" - "/usr/share\0" -#ifdef HAVE_SPLIT_USR - "/lib\0" -#endif - ; - - const char suffixes[] = - "sysctl.d\0" - "tmpfiles.d\0" - "modules-load.d\0" - "systemd/system\0" - "systemd/user\0" - "binfmt.d\0" - "udev/rules.d\0" - "modprobe.d\0"; - int r = 0, k; int n_found = 0; @@ -354,14 +601,22 @@ int main(int argc, char *argv[]) { if (r <= 0) goto finish; - if (!arg_no_pager) - pager_open(); + if (arg_flags == 0) + arg_flags = SHOW_DEFAULTS; + + if (arg_diff < 0) + arg_diff = !!(arg_flags & SHOW_OVERRIDDEN); + else if (arg_diff) + arg_flags |= SHOW_OVERRIDDEN; + + pager_open_if_enabled(); if (optind < argc) { int i; for (i = optind; i < argc; i++) { - k = process_suffix_chop(prefixes, argv[i]); + path_kill_slashes(argv[i]); + k = process_suffix_chop(argv[i]); if (k < 0) r = k; else @@ -369,19 +624,16 @@ int main(int argc, char *argv[]) { } } else { - const char *n; - - NULSTR_FOREACH(n, suffixes) { - k = process_suffix(prefixes, n); - if (k < 0) - r = k; - else - n_found += k; - } + k = process_suffixes(NULL); + if (k < 0) + r = k; + else + n_found += k; } if (r >= 0) - printf("\n%i overriden configuration files found.\n", n_found); + printf("%s%i overridden configuration files found.\n", + n_found ? "\n" : "", n_found); finish: pager_close();