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Require symlink support

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Require lstat(2), lchown(2), S_IFLNK and S_ISLNK from POSIX.1-2001.

Already unconditionally used in lib/tcbfuncs.c and lib/run_part.c.
This commit is contained in:
Christian Göttsche 2022-08-05 17:57:24 +02:00 committed by Serge Hallyn
parent f6f8bcd2a5
commit dab764d019
4 changed files with 3 additions and 27 deletions
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2
configure.ac
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@ -49,7 +49,7 @@ AC_CHECK_HEADER([shadow.h],,[AC_MSG_ERROR([You need a libc with shadow.h])])
AC_CHECK_FUNCS(arc4random_buf l64a fchmod fchown fsync futimes \
getentropy getrandom getspnam getusershell \
getutent initgroups lchown lckpwdf lstat lutimes \
getutent initgroups lckpwdf lutimes \
setgroups updwtmp updwtmpx innetgr getpwnam_r \
getpwuid_r getgrnam_r getgrgid_r getspnam_r \
memset_s explicit_bzero)

2
lib/commonio.c
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@ -65,7 +65,6 @@ int lrename (const char *old, const char *new)
int res;
char *r = NULL;
#if defined(S_ISLNK)
#ifndef __GLIBC__
char resolved_path[PATH_MAX];
#endif /* !__GLIBC__ */
@ -82,7 +81,6 @@ int lrename (const char *old, const char *new)
new = r;
}
}
#endif /* S_ISLNK */
res = rename (old, new);

16
lib/defines.h
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@ -205,22 +205,6 @@ static inline void memzero(void *ptr, size_t size)
# define SEEK_END 2
#endif
#ifndef S_ISLNK
#define S_ISLNK(x) (0)
#endif
#if HAVE_LCHOWN
#define LCHOWN lchown
#else
#define LCHOWN chown
#endif
#if HAVE_LSTAT
#define LSTAT lstat
#else
#define LSTAT stat
#endif
#if HAVE_TERMIOS_H
# include <termios.h>
# define STTY(fd, termio) tcsetattr(fd, TCSANOW, termio)

10
libmisc/copydir.c
View File

@ -56,14 +56,12 @@ static int copy_dir (const char *src, const char *dst,
const struct stat *statp, const struct timeval mt[],
uid_t old_uid, uid_t new_uid,
gid_t old_gid, gid_t new_gid);
#ifdef S_IFLNK
static /*@null@*/char *readlink_malloc (const char *filename);
static int copy_symlink (const char *src, const char *dst,
unused bool reset_selinux,
const struct stat *statp, const struct timeval mt[],
uid_t old_uid, uid_t new_uid,
gid_t old_gid, gid_t new_gid);
#endif /* S_IFLNK */
static int copy_hardlink (const char *dst,
unused bool reset_selinux,
struct link_name *lp);
@ -223,7 +221,7 @@ int copy_tree (const char *src_root, const char *dst_root,
return -1;
}
if (LSTAT (src_root, &sb) == -1) {
if (lstat (src_root, &sb) == -1) {
return -1;
}
@ -364,7 +362,7 @@ static int copy_entry (const char *src, const char *dst,
struct link_name *lp;
struct timeval mt[2];
if (LSTAT (src, &sb) == -1) {
if (lstat (src, &sb) == -1) {
/* If we cannot stat the file, do not care. */
} else {
#ifdef HAVE_STRUCT_STAT_ST_ATIM
@ -396,7 +394,6 @@ static int copy_entry (const char *src, const char *dst,
old_uid, new_uid, old_gid, new_gid);
}
#ifdef S_IFLNK
/*
* Copy any symbolic links
*/
@ -405,7 +402,6 @@ static int copy_entry (const char *src, const char *dst,
err = copy_symlink (src, dst, reset_selinux, &sb, mt,
old_uid, new_uid, old_gid, new_gid);
}
#endif /* S_IFLNK */
/*
* See if this is a previously copied link
@ -498,7 +494,6 @@ static int copy_dir (const char *src, const char *dst,
return err;
}
#ifdef S_IFLNK
/*
* readlink_malloc - wrapper for readlink
*
@ -616,7 +611,6 @@ static int copy_symlink (const char *src, const char *dst,
return 0;
}
#endif /* S_IFLNK */
/*
* copy_hardlink - copy a hardlink