Differential D33058 Diff 98737 sbin/ldconfig/elfhints.c

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sbin/ldconfig/elfhints.c

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#include <string.h>		#include <string.h>
#include <unistd.h>		#include <unistd.h>

#include "ldconfig.h"		#include "ldconfig.h"

#define MAXDIRS 1024 /* Maximum directories in path */		#define MAXDIRS 1024 /* Maximum directories in path */
#define MAXFILESIZE (161024) / Maximum hints file size */		#define MAXFILESIZE (161024) / Maximum hints file size */

static void add_dir(const char , const char , int);		static void add_dir(const char , const char , bool);
static void read_dirs_from_file(const char , const char );		static void read_dirs_from_file(const char , const char );
static void read_elf_hints(const char *, int);		static void read_elf_hints(const char *, bool);
static void write_elf_hints(const char *);		static void write_elf_hints(const char *);

static const char *dirs[MAXDIRS];		static const char *dirs[MAXDIRS];
static int ndirs;		static int ndirs;
int insecure;		bool insecure;

static void		static void
add_dir(const char hintsfile, const char name, int trusted)		add_dir(const char hintsfile, const char name, bool trusted)
{		{
struct stat stbuf;		struct stat stbuf;
int i;		int i;

/* Do some security checks */		/* Do some security checks */
if (!trusted && !insecure) {		if (!trusted && !insecure) {
if (stat(name, &stbuf) == -1) {		if (stat(name, &stbuf) == -1) {
warn("%s", name);		warn("%s", name);
▲ Show 20 Lines • Show All 111 Lines • ▼ Show 20 Lines	if ((sp = strdup(sp)) == NULL)
errx(1, "Out of memory");		errx(1, "Out of memory");
add_dir(hintsfile, sp, 0);		add_dir(hintsfile, sp, 0);
}		}

fclose(fp);		fclose(fp);
}		}

static void		static void
read_elf_hints(const char *hintsfile, int must_exist)		read_elf_hints(const char *hintsfile, bool must_exist)
{		{
int fd;		int fd;
struct stat s;		struct stat s;
void *mapbase;		void *mapbase;
struct elfhints_hdr *hdr;		struct elfhints_hdr *hdr;
char *strtab;		char *strtab;
char *dirlist;		char *dirlist;
char *p;		char *p;
Show All 28 Lines	read_elf_hints(const char *hintsfile, bool must_exist)
dirlist = strtab + hdr->dirlist;		dirlist = strtab + hdr->dirlist;

if (*dirlist != '\0')		if (*dirlist != '\0')
while ((p = strsep(&dirlist, ":")) != NULL)		while ((p = strsep(&dirlist, ":")) != NULL)
add_dir(hintsfile, p, 1);		add_dir(hintsfile, p, 1);
}		}

void		void
update_elf_hints(const char hintsfile, int argc, char *argv, int merge)		update_elf_hints(const char hintsfile, int argc, char *argv, bool merge)
{		{
		struct stat s;
int i;		int i;

if (merge)		if (merge)
read_elf_hints(hintsfile, 0);		read_elf_hints(hintsfile, false);
for (i = 0; i < argc; i++) {		for (i = 0; i < argc; i++) {
struct stat s;

if (stat(argv[i], &s) == -1)		if (stat(argv[i], &s) == -1)
warn("warning: %s", argv[i]);		warn("warning: %s", argv[i]);
else if (S_ISREG(s.st_mode))		else if (S_ISREG(s.st_mode))
read_dirs_from_file(hintsfile, argv[i]);		read_dirs_from_file(hintsfile, argv[i]);
else		else
add_dir(hintsfile, argv[i], 0);		add_dir(hintsfile, argv[i], 0);
}		}
write_elf_hints(hintsfile);		write_elf_hints(hintsfile);
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