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Rename rtld's parse_libdir to parse_integer.

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This is a more accurate name, as the integer doesn't have to be a library
directory descriptor. It is also a prerequisite for more argument parsing
coming in the near future (e.g., parsing explicit binary descriptors).

Reviewed by:	kib
MFC after:	2 weeks
Sponsored by:	NSERC
This commit is contained in:
Jonathan Anderson 2017-05-16 13:27:44 +00:00
parent 018101a836
commit 7a36bd9ffd
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=318352
1 changed files with 13 additions and 12 deletions
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25
libexec/rtld-elf/rtld.c
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@ -115,7 +115,7 @@ static void objlist_push_head(Objlist *, Obj_Entry *);
static void objlist_push_tail(Objlist *, Obj_Entry *);
static void objlist_put_after(Objlist *, Obj_Entry *, Obj_Entry *);
static void objlist_remove(Objlist *, Obj_Entry *);
static int parse_libdir(const char *);
static int parse_integer(const char *);
static void *path_enumerate(const char *, path_enum_proc, void *);
static void release_object(Obj_Entry *);
static int relocate_object_dag(Obj_Entry *root, bool bind_now,
@ -3033,9 +3033,12 @@ search_library_pathfds(const char *name, const char *path, int *fdp)
envcopy = xstrdup(path);
for (fdstr = strtok_r(envcopy, ":", &last_token); fdstr != NULL;
fdstr = strtok_r(NULL, ":", &last_token)) {
dirfd = parse_libdir(fdstr);
if (dirfd < 0)
dirfd = parse_integer(fdstr);
if (dirfd < 0) {
_rtld_error("failed to parse directory FD: '%s'",
fdstr);
break;
}
fd = __sys_openat(dirfd, name, O_RDONLY | O_CLOEXEC | O_VERIFY);
if (fd >= 0) {
*fdp = fd;
@ -5236,29 +5239,27 @@ symlook_init_from_req(SymLook *dst, const SymLook *src)
* Parse a file descriptor number without pulling in more of libc (e.g. atoi).
*/
static int
parse_libdir(const char *str)
parse_integer(const char *str)
{
static const int RADIX = 10; /* XXXJA: possibly support hex? */
const char *orig;
int fd;
int n;
char c;
orig = str;
fd = 0;
n = 0;
for (c = *str; c != '\0'; c = *++str) {
if (c < '0' || c > '9')
return (-1);
fd *= RADIX;
fd += c - '0';
n *= RADIX;
n += c - '0';
}
/* Make sure we actually parsed something. */
if (str == orig) {
_rtld_error("failed to parse directory FD from '%s'", str);
if (str == orig)
return (-1);
}
return (fd);
return (n);
}
/*