mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-22 11:17:19 +00:00
48aaad5fbc
fields in FTS and FTSENT structs being too narrow. In addition, the narrow types creep from there into fts.c. As a result, fts(3) consumers, e.g., find(1) or rm(1), can't handle file trees an ordinary user can create, which can have security implications. To fix the historic implementation of fts(3), OpenBSD and NetBSD have already changed <fts.h> in somewhat incompatible ways, so we are free to do so, too. This change is a superset of changes from the other BSDs with a few more improvements. It doesn't touch fts(3) functionality; it just extends integer types used by it to match modern reality and the C standard. Here are its points: o For C object sizes, use size_t unless it's 100% certain that the object will be really small. (Note that fts(3) can construct pathnames _much_ longer than PATH_MAX for its consumers.) o Avoid the short types because on modern platforms using them results in larger and slower code. Change shorts to ints as follows: - For variables than count simple, limited things like states, use plain vanilla `int' as it's the type of choice in C. - For a limited number of bit flags use `unsigned' because signed bit-wise operations are implementation-defined, i.e., unportable, in C. o For things that should be at least 64 bits wide, use long long and not int64_t, as the latter is an optional type. See FTSENT.fts_number aka FTS.fts_bignum. Extending fts_number `to satisfy future needs' is pointless because there is fts_pointer, which can be used to link to arbitrary data from an FTSENT. However, there already are fts(3) consumers that require fts_number, or fts_bignum, have at least 64 bits in it, so we must allow for them. o For the tree depth, use `long'. This is a trade-off between making this field too wide and allowing for 64-bit inode numbers and/or chain-mounted filesystems. On the one hand, `long' is almost enough for 32-bit filesystems on a 32-bit platform (our ino_t is uint32_t now). On the other hand, platforms with a 64-bit (or wider) `long' will be ready for 64-bit inode numbers, as well as for several 32-bit filesystems mounted one under another. Note that fts_level has to be signed because -1 is a magic value for it, FTS_ROOTPARENTLEVEL. o For the `nlinks' local var in fts_build(), use `long'. The logic in fts_build() requires that `nlinks' be signed, but our nlink_t currently is uint16_t. Therefore let's make the signed var wide enough to be able to represent 2^16-1 in pure C99, and even 2^32-1 on a 64-bit platform. Perhaps the logic should be changed just to use nlink_t, but it can be done later w/o breaking fts(3) ABI any more because `nlinks' is just a local var. This commit also inludes supporting stuff for the fts change: o Preserve the old versions of fts(3) functions through libc symbol versioning because the old versions appeared in all our former releases. o Bump __FreeBSD_version just in case. There is a small chance that some ill-written 3-rd party apps may fail to build or work correctly if compiled after this change. o Update the fts(3) manpage accordingly. In particular, remove references to fts_bignum, which was a FreeBSD-specific hack to work around the too narrow types of FTSENT members. Now fts_number is at least 64 bits wide (long long) and fts_bignum is an undocumented alias for fts_number kept around for compatibility reasons. According to Google Code Search, the only big consumers of fts_bignum are in our own source tree, so they can be fixed easily to use fts_number. o Mention the change in src/UPDATING. PR: bin/104458 Approved by: re (quite a while ago) Discussed with: deischen (the symbol versioning part) Reviewed by: -arch (mostly silence); das (generally OK, but we didn't agree on some types used; assuming that no objections on -arch let me to stick to my opinion)
454 lines
6.7 KiB
Plaintext
454 lines
6.7 KiB
Plaintext
/*
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* $FreeBSD$
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*/
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FBSD_1.0 {
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__xuname;
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pthread_atfork;
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pthread_attr_destroy;
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pthread_attr_getdetachstate;
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pthread_attr_getguardsize;
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pthread_attr_getinheritsched;
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pthread_attr_getschedparam;
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pthread_attr_getschedpolicy;
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pthread_attr_getscope;
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pthread_attr_getstackaddr;
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pthread_attr_getstacksize;
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pthread_attr_init;
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pthread_attr_setdetachstate;
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pthread_attr_setguardsize;
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pthread_attr_setinheritsched;
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pthread_attr_setschedparam;
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pthread_attr_setschedpolicy;
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pthread_attr_setscope;
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pthread_attr_setstackaddr;
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pthread_attr_setstacksize;
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pthread_cancel;
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pthread_cleanup_pop;
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pthread_cleanup_push;
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pthread_cond_broadcast;
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pthread_cond_destroy;
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pthread_cond_init;
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pthread_cond_signal;
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pthread_cond_timedwait;
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pthread_cond_wait;
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pthread_detach;
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pthread_equal;
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pthread_exit;
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pthread_getspecific;
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pthread_join;
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pthread_key_create;
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pthread_key_delete;
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pthread_kill;
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pthread_main_np;
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pthread_mutex_destroy;
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pthread_mutex_init;
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pthread_mutex_lock;
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pthread_mutex_trylock;
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pthread_mutex_unlock;
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pthread_mutexattr_destroy;
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pthread_mutexattr_init;
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pthread_mutexattr_settype;
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pthread_once;
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pthread_rwlock_destroy;
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pthread_rwlock_init;
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pthread_rwlock_rdlock;
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pthread_rwlock_tryrdlock;
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pthread_rwlock_trywrlock;
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pthread_rwlock_unlock;
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pthread_rwlock_wrlock;
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pthread_self;
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pthread_setcancelstate;
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pthread_setcanceltype;
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pthread_setspecific;
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pthread_sigmask;
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pthread_testcancel;
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alarm;
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arc4random;
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arc4random_addrandom;
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arc4random_stir;
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__assert;
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basename;
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check_utility_compat;
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clock;
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closedir;
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confstr;
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encrypt;
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des_setkey;
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des_cipher;
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setkey;
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ctermid;
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ctermid_r;
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daemon;
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devname;
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devname_r;
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dirname;
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getdiskbyname;
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dladdr;
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dlclose;
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dlerror;
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dlfunc;
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dllockinit;
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dlopen;
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dlsym;
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dlvsym;
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dlinfo;
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dl_iterate_phdr;
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drand48;
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erand48;
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err_set_file;
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err_set_exit;
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err;
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verr;
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errc;
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verrc;
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errx;
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verrx;
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warn;
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vwarn;
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warnc;
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vwarnc;
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warnx;
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vwarnx;
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sys_errlist;
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sys_nerr;
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errno;
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execl;
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execle;
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execlp;
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execv;
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execvp;
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execvP;
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fmtcheck;
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fmtmsg;
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fnmatch;
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__fpclassifyf;
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__fpclassifyd;
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__fpclassifyl;
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frexp;
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setfstab;
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getfstab;
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getfsent;
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getfsspec;
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getfsfile;
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setfsent;
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endfsent;
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ftok;
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ftw;
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glob;
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globfree;
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getbootfile;
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getbsize;
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cgetset;
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cgetcap;
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cgetent;
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cgetmatch;
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cgetfirst;
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cgetclose;
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cgetnext;
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cgetstr;
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cgetustr;
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cgetnum;
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getcwd;
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getdomainname;
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setgrent;
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setgroupent;
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endgrent;
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getgrent_r;
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getgrnam_r;
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getgrgid_r;
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getgrnam;
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getgrgid;
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getgrent;
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/*
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* Why are __gr_parse_entry() and __gr_match_entry() not static in
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* gen/getgrent.c?
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*/
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getgrouplist;
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gethostname;
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getloadavg;
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getlogin;
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getlogin_r;
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getmntinfo;
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setnetgrent;
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getnetgrent;
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endnetgrent;
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innetgr;
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getosreldate;
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getpagesize;
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getpeereid;
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_getprogname;
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getprogname;
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setpwent;
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setpassent;
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endpwent;
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getpwent_r;
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getpwnam_r;
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getpwuid_r;
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getpwnam;
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getpwuid;
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getpwent;
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getttynam;
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getttyent;
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setttyent;
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endttyent;
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isdialuptty;
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isnettty;
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getusershell;
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endusershell;
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setusershell;
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getvfsbyname;
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__isnan;
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isnan;
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__isnanf;
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isnanf;
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__isinf;
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isinf;
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__isinff;
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__isinfl;
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isatty;
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initgroups;
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jrand48;
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lcong48;
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ldexp;
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lockf;
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lrand48;
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mrand48;
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nftw;
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nice;
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nlist;
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nrand48;
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opendir;
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pause;
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posix_madvise;
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popen;
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pclose;
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shm_open;
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shm_unlink;
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pselect;
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psignal;
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raise;
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readdir;
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readdir_r;
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readpassphrase;
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getpass;
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rewinddir;
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scandir;
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alphasort;
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seed48;
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seekdir;
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user_from_uid;
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group_from_gid;
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sem_init;
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sem_destroy;
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sem_open;
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sem_close;
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sem_unlink;
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sem_wait;
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sem_trywait;
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sem_timedwait;
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sem_post;
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sem_getvalue;
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semctl;
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setdomainname;
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sethostname;
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longjmperror;
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getmode;
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setmode;
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setproctitle;
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setprogname;
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siginterrupt;
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sys_signame;
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sys_siglist;
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sys_nsig;
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signal;
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sigaddset;
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sigdelset;
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sigemptyset;
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sigfillset;
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sigismember;
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sleep;
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srand48;
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fstatvfs;
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statvfs;
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sl_init;
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sl_add;
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sl_free;
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sl_find;
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fflagstostr;
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strtofflags;
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sysconf;
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sysctl;
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sysctlbyname;
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sysctlnametomib;
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syslog;
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vsyslog;
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openlog;
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closelog;
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setlogmask;
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ttyslot;
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ttyname_r;
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ttyname;
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timezone;
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times;
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time;
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telldir;
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tcgetattr;
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tcsetattr;
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tcsetpgrp;
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tcgetpgrp;
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cfgetospeed;
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cfgetispeed;
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cfsetospeed;
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cfsetispeed;
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cfsetspeed;
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cfmakeraw;
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tcsendbreak;
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_init_tls;
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__tls_get_addr;
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tcdrain;
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tcflush;
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tcflow;
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ualarm;
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ulimit;
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uname;
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unvis;
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strunvis;
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strunvisx;
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usleep;
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utime;
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valloc;
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vis;
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strvis;
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strvisx;
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wait;
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wait3;
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waitpid;
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wordexp;
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wordfree;
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};
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FBSD_1.1 {
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fts_open;
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fts_close;
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fts_read;
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fts_set;
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fts_children;
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fts_get_clientptr;
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fts_get_stream;
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fts_set_clientptr;
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};
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FBSDprivate_1.0 {
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/* needed by thread libraries */
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__thr_jtable;
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_pthread_atfork;
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_pthread_attr_destroy;
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_pthread_attr_getdetachstate;
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_pthread_attr_getguardsize;
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_pthread_attr_getinheritsched;
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_pthread_attr_getschedparam;
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_pthread_attr_getschedpolicy;
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_pthread_attr_getscope;
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_pthread_attr_getstackaddr;
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_pthread_attr_getstacksize;
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_pthread_attr_init;
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_pthread_attr_setdetachstate;
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_pthread_attr_setguardsize;
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_pthread_attr_setinheritsched;
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_pthread_attr_setschedparam;
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_pthread_attr_setschedpolicy;
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_pthread_attr_setscope;
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_pthread_attr_setstackaddr;
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_pthread_attr_setstacksize;
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_pthread_cancel;
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_pthread_cleanup_pop;
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_pthread_cleanup_push;
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_pthread_cond_broadcast;
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_pthread_cond_destroy;
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_pthread_cond_init;
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_pthread_cond_signal;
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_pthread_cond_timedwait;
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_pthread_cond_wait;
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_pthread_detach;
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_pthread_equal;
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_pthread_exit;
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_pthread_getspecific;
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_pthread_join;
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_pthread_key_create;
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_pthread_key_delete;
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_pthread_kill;
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_pthread_main_np;
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_pthread_mutex_destroy;
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_pthread_mutex_init_calloc_cb;
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_pthread_mutex_init;
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_pthread_mutex_lock;
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_pthread_mutex_trylock;
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_pthread_mutex_unlock;
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_pthread_mutexattr_destroy;
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_pthread_mutexattr_init;
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_pthread_mutexattr_settype;
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_pthread_once;
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_pthread_rwlock_destroy;
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_pthread_rwlock_init;
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_pthread_rwlock_rdlock;
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_pthread_rwlock_tryrdlock;
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_pthread_rwlock_trywrlock;
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_pthread_rwlock_unlock;
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_pthread_rwlock_wrlock;
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_pthread_self;
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_pthread_setcancelstate;
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_pthread_setcanceltype;
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_pthread_setspecific;
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_pthread_sigmask;
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_pthread_testcancel;
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_spinlock;
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_spinlock_debug;
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_spinunlock;
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_rtld_error; /* for private use */
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_rtld_thread_init; /* for private use */
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_err;
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_warn;
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__fmtcheck;
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/* __pw_match_entry; */
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/* __pw_parse_entry; */
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__fdnlist; /* used by libkvm */
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/* __aout_fdnlist; */
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/* __elf_is_okay__; */
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/* __elf_fdnlist; */
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__opendir2;
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__pause;
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_pause;
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__pselect;
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__pw_scan; /* Used by (at least) libutil */
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__raise;
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_raise;
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__sem_init;
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__sem_destroy;
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__sem_open;
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__sem_close;
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__sem_unlink;
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__sem_wait;
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__sem_trywait;
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__sem_timedwait;
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__sem_post;
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__sem_getvalue;
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__sleep;
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_sleep;
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_rtld_allocate_tls;
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_rtld_free_tls;
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#if defined(i386)
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___libc_tls_get_addr; /* x86 only */
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#endif
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__libc_tls_get_addr;
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__tcdrain;
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_tcdrain;
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__usleep;
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_usleep;
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__wait;
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_wait;
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__waitpid;
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_waitpid;
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};
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