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From a17c57bf2b7b6d64a509cb5fb02fe46849bc550c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Dan=20Hor=C3=A1k?= <dan@danny.cz>
Date: Mon, 20 Jun 2022 17:43:05 +0200
Subject: [PATCH 1/2] Revert "zipl/src: Implement sorting bls entries by
versions"
This reverts commit a0dba6bfdb50ff373fa710ffe2a307cc0748f18b.
---
zipl/src/scan.c | 139 ++----------------------------------------------
1 file changed, 3 insertions(+), 136 deletions(-)
diff --git a/zipl/src/scan.c b/zipl/src/scan.c
index 0cea1d4..9352f76 100644
--- a/zipl/src/scan.c
+++ b/zipl/src/scan.c
@@ -10,7 +10,6 @@
*
*/
-static const char *VERSION_KEYWORD = "version";
/* Need ISOC99 function isblank() in ctype.h */
#ifndef __USE_ISOC99
@@ -646,7 +645,7 @@ scan_file(const char* filename, struct scan_token** token)
static int
-bls_filter_by_names(const struct dirent *ent)
+bls_filter(const struct dirent *ent)
{
int offset = strlen(ent->d_name) - strlen(".conf");
@@ -656,111 +655,13 @@ bls_filter_by_names(const struct dirent *ent)
return strncmp(ent->d_name + offset, ".conf", strlen(".conf")) == 0;
}
-struct version {
- char *line; /* pointer to a line with version keyword */
- int offset; /* offset of version value in the line */
-};
-
-/*
- * Locate version in bls file represented by ENT
- */
-static void get_version(const struct dirent *ent, struct version *v)
-{
- char *line = NULL;
- size_t len = 0;
- char *d_name;
- FILE *stream;
- ssize_t read;
-
- memset(v, 0, sizeof(*v));
- d_name = misc_make_path((char *)blsdir, (char *)ent->d_name);
- if (!d_name)
- return;
-
- stream = fopen(d_name, "r");
- free(d_name);
- if (!stream)
- return;
-
- while ((read = getline(&line, &len, stream)) != -1) {
- if (line[read - 1] == '\n') {
- line[read - 1] = '\0';
- read--;
- }
- if ((size_t)read <= strlen(VERSION_KEYWORD) + 1)
- continue;
- if (strcmp(VERSION_KEYWORD, line) > 0)
- continue;
- if (!isblank(line[strlen(VERSION_KEYWORD)]))
- continue;
- /* skip blanks */
- v->offset = strlen(VERSION_KEYWORD) + 1;
- while (v->offset < read - 1 && isblank(line[v->offset]))
- v->offset++;
- if (isblank(line[v->offset]))
- /*
- * all characters after the keyword
- * are blanks. Invalid version
- */
- continue;
- v->line = line;
- fclose(stream);
- return;
- }
- free(line);
- fclose(stream);
-}
-
-static void put_version(struct version *v)
-{
- free(v->line);
-}
-
-/**
- * Check version in bls file represented by ENT.
- * Return 1 if version is valid. Otherwise return 0
- */
-static int bls_filter_by_versions(const struct dirent *ent)
-{
- struct version v;
-
- if (bls_filter_by_names(ent) == 0)
- return 0;
-
- get_version(ent, &v);
- if (v.line) {
- put_version(&v);
- return 1;
- }
- return 0;
-}
-
static int
-bls_sort_by_names(const struct dirent **ent_a, const struct dirent **ent_b)
+bls_sort(const struct dirent **ent_a, const struct dirent **ent_b)
{
return strverscmp((*ent_a)->d_name, (*ent_b)->d_name);
}
-static int
-bls_sort_by_versions(const struct dirent **ent_a, const struct dirent **ent_b)
-{
- struct version v1, v2;
- int ret;
-
- get_version(*ent_a, &v1);
- get_version(*ent_b, &v2);
- /*
- * Both versions are valid.
- * It is guaranteed by bls_filter_by_versions()
- */
- ret = strverscmp(v1.line + v1.offset, v2.line + v2.offset);
-
- put_version(&v1);
- put_version(&v2);
-
- return ret;
-}
static int
scan_append_section_heading(struct scan_token* scan, int* index, char* name);
@@ -1110,40 +1011,6 @@ scan_count_target_keywords(char* keyword[])
return num;
}
-static int bls_scandir(struct dirent ***bls_entries)
-{
- struct dirent **entries1;
- struct dirent **entries2;
- int n1, n2;
-
- /* arrange by names */
- n1 = scandir(blsdir, &entries1,
- bls_filter_by_names, bls_sort_by_names);
- if (n1 <= 0)
- return n1;
- /* arrange by versions */
- n2 = scandir(blsdir, &entries2,
- bls_filter_by_versions, bls_sort_by_versions);
-
- if (n2 <= 0 || n2 < n1) {
- /*
- * failed to sort by versions,
- * fall back to sorting by filenames
- */
- *bls_entries = entries1;
- while (n2--)
- free(entries2[n2]);
- free(entries2);
- return n1;
- }
- /* use arrangement by versions */
- *bls_entries = entries2;
- while (n1--)
- free(entries1[n1]);
- free(entries1);
- return n2;
-}
-
int
scan_check_target_data(char* keyword[], int* line)
{
@@ -1464,7 +1331,7 @@ int scan_bls(struct scan_token **token, int scan_size)
if (!(stat(blsdir, &sb) == 0 && S_ISDIR(sb.st_mode)))
return 0;
- n = bls_scandir(&bls_entries);
+ n = scandir(blsdir, &bls_entries, bls_filter, bls_sort);
if (n <= 0)
return n;
--
2.38.1
From 7a51cfc15b870d90bffe1e24a1da922663ffe1d7 Mon Sep 17 00:00:00 2001
From: Peter Jones <pjones@redhat.com>
Date: Mon, 20 Jun 2022 17:46:59 +0200
Subject: [PATCH 2/2] blscfg: sort like rpm nvr, not like a single version
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Signed-off-by: Peter Jones <pjones@redhat.com>
Signed-off-by: Dan Horák <dan@danny.cz>
---
zipl/src/Makefile | 1 +
zipl/src/scan.c | 96 ++++++++++++++++++++++++++++++++++++++++++++++-
2 files changed, 95 insertions(+), 2 deletions(-)
diff --git a/zipl/src/Makefile b/zipl/src/Makefile
index 64eabe4..7043005 100644
--- a/zipl/src/Makefile
+++ b/zipl/src/Makefile
@@ -9,6 +9,7 @@ ALL_LDFLAGS += -Wl,-z,noexecstack $(NO_PIE_LDFLAGS)
libs = $(rootdir)/libutil/libutil.a \
$(rootdir)/libvtoc/libvtoc.a \
+ -lrpmio -lrpm
objects = misc.o error.o scan.o job.o boot.o bootmap.o fs-map.o disk.o \
bootmap_header.o envblk.o install.o zipl.o $(rootdir)/zipl/boot/data.o
diff --git a/zipl/src/scan.c b/zipl/src/scan.c
index 9352f76..3327e2d 100644
--- a/zipl/src/scan.c
+++ b/zipl/src/scan.c
@@ -35,6 +35,8 @@
#include "lib/util_base.h"
+#include <rpm/rpmlib.h>
+
#include "boot.h"
#include "error.h"
#include "misc.h"
@@ -655,13 +657,103 @@ bls_filter(const struct dirent *ent)
return strncmp(ent->d_name + offset, ".conf", strlen(".conf")) == 0;
}
+/* returns name/version/release */
+/* NULL string pointer returned if nothing found */
+static void
+split_package_string (char *package_string, char **name,
+ char **version, char **release)
+{
+ char *package_version, *package_release;
+
+ /* Release */
+ package_release = strrchr (package_string, '-');
+
+ if (package_release != NULL)
+ *package_release++ = '\0';
+
+ *release = package_release;
+
+ /* Version */
+ package_version = strrchr(package_string, '-');
+
+ if (package_version != NULL)
+ *package_version++ = '\0';
+
+ *version = package_version;
+ /* Name */
+ *name = package_string;
+
+ /* Bubble up non-null values from release to name */
+ if (name != NULL && *name == NULL) {
+ *name = (*version == NULL ? *release : *version);
+ *version = *release;
+ *release = NULL;
+ }
+ if (*version == NULL) {
+ *version = *release;
+ *release = NULL;
+ }
+}
static int
-bls_sort(const struct dirent **ent_a, const struct dirent **ent_b)
+split_cmp(char *nvr0, char *nvr1, int has_name)
+{
+ int ret = 0;
+ char *name0, *version0, *release0;
+ char *name1, *version1, *release1;
+
+ split_package_string(nvr0, has_name ? &name0 : NULL, &version0, &release0);
+ split_package_string(nvr1, has_name ? &name1 : NULL, &version1, &release1);
+
+ if (has_name) {
+ ret = rpmvercmp(name0 == NULL ? "" : name0,
+ name1 == NULL ? "" : name1);
+ if (ret != 0)
+ return ret;
+ }
+
+ ret = rpmvercmp(version0 == NULL ? "" : version0,
+ version1 == NULL ? "" : version1);
+ if (ret != 0)
+ return ret;
+
+ ret = rpmvercmp(release0 == NULL ? "" : release0,
+ release1 == NULL ? "" : release1);
+ return ret;
+}
+
+/* return 1: filename0 is newer than filename1 */
+/* 0: filename0 and filename1 are the same version */
+/* -1: filename1 is newer than filename0 */
+static int bls_cmp(const char *filename0, const char *filename1)
{
- return strverscmp((*ent_a)->d_name, (*ent_b)->d_name);
+ char *id0, *id1;
+ int l, r;
+
+ id0 = strdup(filename0);
+ id1 = strdup(filename1);
+
+ l = strlen(id0);
+ if (l > 5 && strcmp(id0 + l - 5, ".conf"))
+ id0[l-5] = '\0';
+
+ l = strlen(id1);
+ if (l > 5 && strcmp(id1 + l - 5, ".conf"))
+ id1[l-5] = '\0';
+
+ r = split_cmp(id0, id1, 1);
+
+ free(id0);
+ free(id1);
+
+ return r;
}
+static int
+bls_sort(const struct dirent **ent_a, const struct dirent **ent_b)
+{
+ return bls_cmp((*ent_a)->d_name, (*ent_b)->d_name);
+}
static int
scan_append_section_heading(struct scan_token* scan, int* index, char* name);
--
2.38.1
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