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compare symbol versions with strverscmp()

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darealshinji 2022-06-24 04:13:13 +02:00
parent fae29f16e4
commit 3b0f28c71f
1 changed files with 18 additions and 29 deletions
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47
src/checkrt.c
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@ -85,7 +85,7 @@ static char *get_libpath(const char *lib, char verbose)
return path;
}
static int symbol_version(const char *lib, const char *symbol, char verbose)
static int symbol_version(const char *lib, const char *sym_prefix, char verbose)
{
int fd = -1;
void *addr = NULL;
@ -164,9 +164,10 @@ static int symbol_version(const char *lib, const char *symbol, char verbose)
}
}
const char *symbol = NULL;
size_t len = strlen(sym_prefix);
/* iterate through sections */
size_t len = strlen(symbol);
int maj = 0, min = 0, pat = 0;
for (int i = 0; i < shnum; ++i) {
if (shdr[i].sh_type != SHT_SYMTAB && shdr[i].sh_type != SHT_DYNSYM) {
continue;
@ -183,46 +184,34 @@ static int symbol_version(const char *lib, const char *symbol, char verbose)
continue;
}
const char *symbol_name;
const char *name;
if (shdr[i].sh_type == SHT_DYNSYM) {
symbol_name = sh_dynstr_p + syms_data[j].st_name;
name = sh_dynstr_p + syms_data[j].st_name;
} else {
symbol_name = sh_strtab_p + syms_data[j].st_name;
name = sh_strtab_p + syms_data[j].st_name;
}
if (strncmp(symbol_name, symbol, len) != 0) {
if (strncmp(name, sym_prefix, len) != 0) {
continue;
}
int tmp_maj = 0, tmp_min = 0, tmp_pat = 0;
if (sscanf(symbol_name + len, "%d.%d.%d", &tmp_maj, &tmp_min, &tmp_pat) < 1) {
if (!symbol) {
symbol = name;
continue;
}
if (tmp_maj < maj) {
continue;
} else if (tmp_maj > maj) {
maj = tmp_maj;
min = tmp_min;
pat = tmp_pat;
continue;
}
if (tmp_min < min) {
continue;
} else if (tmp_min > min) {
min = tmp_min;
pat = tmp_pat;
continue;
}
if (tmp_pat > pat) {
pat = tmp_pat;
if (strverscmp(name, symbol) > 0) {
symbol = name;
}
}
}
PRINT_VERBOSE("%s%d.%d.%d\n", symbol, maj, min, pat);
int maj = 0, min = 0, pat = 0;
if (sscanf(symbol + len, "%d.%d.%d", &maj, &min, &pat) < 1) {
goto symbol_version_error;
}
PRINT_VERBOSE("%s%d.%d.%d\n", sym_prefix, maj, min, pat);
munmap(addr, st.st_size);
close(fd);
return (pat + min*1000 + maj*1000000);