summaryrefslogtreecommitdiff
path: root/scripts/mod/sumversion.c
diff options
context:
space:
mode:
Diffstat (limited to 'scripts/mod/sumversion.c')
-rw-r--r--scripts/mod/sumversion.c190
1 files changed, 42 insertions, 148 deletions
diff --git a/scripts/mod/sumversion.c b/scripts/mod/sumversion.c
index 9dfcd6d988da..3dd28b4d0099 100644
--- a/scripts/mod/sumversion.c
+++ b/scripts/mod/sumversion.c
@@ -8,6 +8,8 @@
#include <errno.h>
#include <string.h>
#include <limits.h>
+
+#include <xalloc.h>
#include "modpost.h"
/*
@@ -153,7 +155,7 @@ static void md4_transform(uint32_t *hash, uint32_t const *in)
static inline void md4_transform_helper(struct md4_ctx *ctx)
{
- le32_to_cpu_array(ctx->block, sizeof(ctx->block) / sizeof(uint32_t));
+ le32_to_cpu_array(ctx->block, ARRAY_SIZE(ctx->block));
md4_transform(ctx->hash, ctx->block);
}
@@ -214,9 +216,9 @@ static void md4_final_ascii(struct md4_ctx *mctx, char *out, unsigned int len)
mctx->block[14] = mctx->byte_count << 3;
mctx->block[15] = mctx->byte_count >> 29;
le32_to_cpu_array(mctx->block, (sizeof(mctx->block) -
- sizeof(uint64_t)) / sizeof(uint32_t));
+ sizeof(uint64_t)) / sizeof(uint32_t));
md4_transform(mctx->hash, mctx->block);
- cpu_to_le32_array(mctx->hash, sizeof(mctx->hash) / sizeof(uint32_t));
+ cpu_to_le32_array(mctx->hash, ARRAY_SIZE(mctx->hash));
snprintf(out, len, "%08X%08X%08X%08X",
mctx->hash[0], mctx->hash[1], mctx->hash[2], mctx->hash[3]);
@@ -258,9 +260,8 @@ static int parse_file(const char *fname, struct md4_ctx *md)
char *file;
unsigned long i, len;
- file = grab_file(fname, &len);
- if (!file)
- return 0;
+ file = read_text_file(fname);
+ len = strlen(file);
for (i = 0; i < len; i++) {
/* Collapse and ignore \ and CR. */
@@ -287,61 +288,49 @@ static int parse_file(const char *fname, struct md4_ctx *md)
add_char(file[i], md);
}
- release_file(file, len);
+ free(file);
return 1;
}
/* Check whether the file is a static library or not */
-static int is_static_library(const char *objfile)
+static bool is_static_library(const char *objfile)
{
int len = strlen(objfile);
- if (objfile[len - 2] == '.' && objfile[len - 1] == 'a')
- return 1;
- else
- return 0;
+
+ return objfile[len - 2] == '.' && objfile[len - 1] == 'a';
}
/* We have dir/file.o. Open dir/.file.o.cmd, look for source_ and deps_ line
* to figure out source files. */
static int parse_source_files(const char *objfile, struct md4_ctx *md)
{
- char *cmd, *file, *line, *dir;
+ char *cmd, *file, *line, *dir, *pos;
const char *base;
- unsigned long flen, pos = 0;
int dirlen, ret = 0, check_files = 0;
- cmd = NOFAIL(malloc(strlen(objfile) + sizeof("..cmd")));
+ cmd = xmalloc(strlen(objfile) + sizeof("..cmd"));
- base = strrchr(objfile, '/');
- if (base) {
- base++;
- dirlen = base - objfile;
- sprintf(cmd, "%.*s.%s.cmd", dirlen, objfile, base);
- } else {
- dirlen = 0;
- sprintf(cmd, ".%s.cmd", objfile);
- }
- dir = NOFAIL(malloc(dirlen + 1));
+ base = get_basename(objfile);
+ dirlen = base - objfile;
+ sprintf(cmd, "%.*s.%s.cmd", dirlen, objfile, base);
+
+ dir = xmalloc(dirlen + 1);
strncpy(dir, objfile, dirlen);
dir[dirlen] = '\0';
- file = grab_file(cmd, &flen);
- if (!file) {
- warn("could not find %s for %s\n", cmd, objfile);
- goto out;
- }
+ file = read_text_file(cmd);
+
+ pos = file;
- /* There will be a line like so:
- deps_drivers/net/dummy.o := \
- drivers/net/dummy.c \
- $(wildcard include/config/net/fastroute.h) \
- include/linux/module.h \
+ /* Sum all files in the same dir or subdirs. */
+ while ((line = get_line(&pos))) {
+ char* p;
- Sum all files in the same dir or subdirs.
- */
- while ((line = get_next_line(&pos, file, flen)) != NULL) {
- char* p = line;
+ /* trim the leading spaces away */
+ while (isspace(*line))
+ line++;
+ p = line;
- if (strncmp(line, "source_", sizeof("source_")-1) == 0) {
+ if (strstarts(line, "source_")) {
p = strrchr(line, ' ');
if (!p) {
warn("malformed line: %s\n", line);
@@ -355,7 +344,7 @@ static int parse_source_files(const char *objfile, struct md4_ctx *md)
}
continue;
}
- if (strncmp(line, "deps_", sizeof("deps_")-1) == 0) {
+ if (strstarts(line, "deps_")) {
check_files = 1;
continue;
}
@@ -367,7 +356,7 @@ static int parse_source_files(const char *objfile, struct md4_ctx *md)
break;
/* Terminate line at first space, to get rid of final ' \' */
while (*p) {
- if (isspace(*p)) {
+ if (isspace(*p)) {
*p = '\0';
break;
}
@@ -389,8 +378,7 @@ static int parse_source_files(const char *objfile, struct md4_ctx *md)
/* Everyone parsed OK */
ret = 1;
out_file:
- release_file(file, flen);
-out:
+ free(file);
free(dir);
free(cmd);
return ret;
@@ -399,121 +387,27 @@ out:
/* Calc and record src checksum. */
void get_src_version(const char *modname, char sum[], unsigned sumlen)
{
- void *file;
- unsigned long len;
+ char *buf, *pos;
struct md4_ctx md;
- char *sources, *end, *fname;
- const char *basename;
+ char *fname;
char filelist[PATH_MAX + 1];
- char *modverdir = getenv("MODVERDIR");
-
- if (!modverdir)
- modverdir = ".";
-
- /* Source files for module are in .tmp_versions/modname.mod,
- after the first line. */
- if (strrchr(modname, '/'))
- basename = strrchr(modname, '/') + 1;
- else
- basename = modname;
- sprintf(filelist, "%s/%.*s.mod", modverdir,
- (int) strlen(basename) - 2, basename);
-
- file = grab_file(filelist, &len);
- if (!file)
- /* not a module or .mod file missing - ignore */
- return;
- sources = strchr(file, '\n');
- if (!sources) {
- warn("malformed versions file for %s\n", modname);
- goto release;
- }
+ /* objects for a module are listed in the first line of *.mod file. */
+ snprintf(filelist, sizeof(filelist), "%s.mod", modname);
- sources++;
- end = strchr(sources, '\n');
- if (!end) {
- warn("bad ending versions file for %s\n", modname);
- goto release;
- }
- *end = '\0';
+ buf = read_text_file(filelist);
+ pos = buf;
md4_init(&md);
- while ((fname = strsep(&sources, " ")) != NULL) {
+ while ((fname = strsep(&pos, "\n"))) {
if (!*fname)
continue;
if (!(is_static_library(fname)) &&
!parse_source_files(fname, &md))
- goto release;
+ goto free;
}
md4_final_ascii(&md, sum, sumlen);
-release:
- release_file(file, len);
-}
-
-static void write_version(const char *filename, const char *sum,
- unsigned long offset)
-{
- int fd;
-
- fd = open(filename, O_RDWR);
- if (fd < 0) {
- warn("changing sum in %s failed: %s\n",
- filename, strerror(errno));
- return;
- }
-
- if (lseek(fd, offset, SEEK_SET) == (off_t)-1) {
- warn("changing sum in %s:%lu failed: %s\n",
- filename, offset, strerror(errno));
- goto out;
- }
-
- if (write(fd, sum, strlen(sum)+1) != strlen(sum)+1) {
- warn("writing sum in %s failed: %s\n",
- filename, strerror(errno));
- goto out;
- }
-out:
- close(fd);
-}
-
-static int strip_rcs_crap(char *version)
-{
- unsigned int len, full_len;
-
- if (strncmp(version, "$Revision", strlen("$Revision")) != 0)
- return 0;
-
- /* Space for version string follows. */
- full_len = strlen(version) + strlen(version + strlen(version) + 1) + 2;
-
- /* Move string to start with version number: prefix will be
- * $Revision$ or $Revision: */
- len = strlen("$Revision");
- if (version[len] == ':' || version[len] == '$')
- len++;
- while (isspace(version[len]))
- len++;
- memmove(version, version+len, full_len-len);
- full_len -= len;
-
- /* Preserve up to next whitespace. */
- len = 0;
- while (version[len] && !isspace(version[len]))
- len++;
- memmove(version + len, version + strlen(version),
- full_len - strlen(version));
- return 1;
-}
-
-/* Clean up RCS-style version numbers. */
-void maybe_frob_rcs_version(const char *modfilename,
- char *version,
- void *modinfo,
- unsigned long version_offset)
-{
- if (strip_rcs_crap(version))
- write_version(modfilename, version, version_offset);
+free:
+ free(buf);
}
generated by cgit (git 2.34.1) at 2025-12-21 21:10:45 +0000