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modpost: drop RCS/CVS $Revision handling in MODULE_VERSION() 

As far as I understood, this code gets rid of '$Revision$' or '$Revision:'
of CVS, RCS or whatever in MODULE_VERSION() tags.

Remove the primeval code.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
This commit is contained in:
Masahiro Yamada 2020-06-01 14:57:15 +09:00
parent 48a0f72797
commit f693153519
3 changed files with 0 additions and 73 deletions
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3
scripts/mod/modpost.c
View File

@ -2066,9 +2066,6 @@ static void read_symbols(const char *modname)
check_sec_ref(mod, modname, &info);
version = get_modinfo(&info, "version");
if (version)
maybe_frob_rcs_version(modname, version, info.modinfo,
version - (char *)info.hdr);
if (version || (all_versions && !is_vmlinux(modname)))
get_src_version(modname, mod->srcversion,
sizeof(mod->srcversion)-1);

4
scripts/mod/modpost.h
View File

@ -188,10 +188,6 @@ void handle_moddevtable(struct module *mod, struct elf_info *info,
void add_moddevtable(struct buffer *buf, struct module *mod);
/* sumversion.c */
void maybe_frob_rcs_version(const char *modfilename,
char *version,
void *modinfo,
unsigned long modinfo_offset);
void get_src_version(const char *modname, char sum[], unsigned sumlen);
/* from modpost.c */

66
scripts/mod/sumversion.c
View File

@ -429,69 +429,3 @@ void get_src_version(const char *modname, char sum[], unsigned 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);
}