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man pages section 3: Basic Library Functions     Oracle Solaris 10 8/11 Information Library
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Document Information

Preface

Basic Library Functions

a64l(3C)

abort(3C)

abs(3C)

addsev(3C)

addseverity(3C)

alloca(3C)

alphasort(3C)

alphasort(3UCB)

ascftime(3C)

asctime(3C)

asctime_r(3C)

asprintf(3C)

assert(3C)

atexit(3C)

atof(3C)

atoi(3C)

atol(3C)

atoll(3C)

atomic_add_16(3C)

atomic_add_16_nv(3C)

atomic_add_32(3C)

atomic_add_32_nv(3C)

atomic_add(3C)

atomic_add_64(3C)

atomic_add_64_nv(3C)

atomic_add_8(3C)

atomic_add_8_nv(3C)

atomic_add_char(3C)

atomic_add_char_nv(3C)

atomic_add_int(3C)

atomic_add_int_nv(3C)

atomic_add_long(3C)

atomic_add_long_nv(3C)

atomic_add_ptr(3C)

atomic_add_ptr_nv(3C)

atomic_add_short(3C)

atomic_add_short_nv(3C)

atomic_and_16(3C)

atomic_and_16_nv(3C)

atomic_and_32(3C)

atomic_and_32_nv(3C)

atomic_and(3C)

atomic_and_64(3C)

atomic_and_64_nv(3C)

atomic_and_8(3C)

atomic_and_8_nv(3C)

atomic_and_uchar(3C)

atomic_and_uchar_nv(3C)

atomic_and_uint(3C)

atomic_and_uint_nv(3C)

atomic_and_ulong(3C)

atomic_and_ulong_nv(3C)

atomic_and_ushort(3C)

atomic_and_ushort_nv(3C)

atomic_bits(3C)

atomic_cas_16(3C)

atomic_cas_32(3C)

atomic_cas(3C)

atomic_cas_64(3C)

atomic_cas_8(3C)

atomic_cas_ptr(3C)

atomic_cas_uchar(3C)

atomic_cas_uint(3C)

atomic_cas_ulong(3C)

atomic_cas_ushort(3C)

atomic_clear_long_excl(3C)

atomic_dec_16(3C)

atomic_dec_16_nv(3C)

atomic_dec_32(3C)

atomic_dec_32_nv(3C)

atomic_dec(3C)

atomic_dec_64(3C)

atomic_dec_64_nv(3C)

atomic_dec_8(3C)

atomic_dec_8_nv(3C)

atomic_dec_ptr(3C)

atomic_dec_ptr_nv(3C)

atomic_dec_uchar(3C)

atomic_dec_uchar_nv(3C)

atomic_dec_uint(3C)

atomic_dec_uint_nv(3C)

atomic_dec_ulong(3C)

atomic_dec_ulong_nv(3C)

atomic_dec_ushort(3C)

atomic_dec_ushort_nv(3C)

atomic_inc_16(3C)

atomic_inc_16_nv(3C)

atomic_inc_32(3C)

atomic_inc_32_nv(3C)

atomic_inc(3C)

atomic_inc_64(3C)

atomic_inc_64_nv(3C)

atomic_inc_8(3C)

atomic_inc_8_nv(3C)

atomic_inc_ptr(3C)

atomic_inc_ptr_nv(3C)

atomic_inc_uchar(3C)

atomic_inc_uchar_nv(3C)

atomic_inc_uint(3C)

atomic_inc_uint_nv(3C)

atomic_inc_ulong(3C)

atomic_inc_ulong_nv(3C)

atomic_inc_ushort(3C)

atomic_inc_ushort_nv(3C)

atomic_ops(3C)

atomic_or_16(3C)

atomic_or_16_nv(3C)

atomic_or_32(3C)

atomic_or_32_nv(3C)

atomic_or(3C)

atomic_or_64(3C)

atomic_or_64_nv(3C)

atomic_or_8(3C)

atomic_or_8_nv(3C)

atomic_or_uchar(3C)

atomic_or_uchar_nv(3C)

atomic_or_uint(3C)

atomic_or_uint_nv(3C)

atomic_or_ulong(3C)

atomic_or_ulong_nv(3C)

atomic_or_ushort(3C)

atomic_or_ushort_nv(3C)

atomic_set_long_excl(3C)

atomic_swap_16(3C)

atomic_swap_32(3C)

atomic_swap(3C)

atomic_swap_64(3C)

atomic_swap_8(3C)

atomic_swap_ptr(3C)

atomic_swap_uchar(3C)

atomic_swap_uint(3C)

atomic_swap_ulong(3C)

atomic_swap_ushort(3C)

attropen(3C)

basename(3C)

bcmp(3C)

bcopy(3C)

bindtextdomain(3C)

bind_textdomain_codeset(3C)

bsdmalloc(3MALLOC)

bsd_signal(3C)

bsearch(3C)

bstring(3C)

btowc(3C)

bzero(3C)

calloc(3C)

calloc(3MALLOC)

catclose(3C)

catgets(3C)

catopen(3C)

cfgetispeed(3C)

cfgetospeed(3C)

cfsetispeed(3C)

cfsetospeed(3C)

cftime(3C)

clearerr(3C)

clock(3C)

closedir(3C)

closefrom(3C)

closelog(3C)

cond_broadcast(3C)

cond_destroy(3C)

cond_init(3C)

cond_reltimedwait(3C)

cond_signal(3C)

cond_timedwait(3C)

cond_wait(3C)

confstr(3C)

crypt(3C)

crypt_genhash_impl(3C)

crypt_gensalt(3C)

crypt_gensalt_impl(3C)

cset(3C)

csetcol(3C)

csetlen(3C)

csetno(3C)

ctermid(3C)

ctermid_r(3C)

ctime(3C)

ctime_r(3C)

ctype(3C)

cuserid(3C)

dbm(3UCB)

dbm_clearerr(3C)

dbm_close(3C)

dbmclose(3UCB)

dbm_delete(3C)

dbm_error(3C)

dbm_fetch(3C)

dbm_firstkey(3C)

dbminit(3UCB)

dbm_nextkey(3C)

dbm_open(3C)

dbm_store(3C)

dcgettext(3C)

dcngettext(3C)

decimal_to_double(3C)

decimal_to_extended(3C)

decimal_to_floating(3C)

decimal_to_quadruple(3C)

decimal_to_single(3C)

delete(3UCB)

dgettext(3C)

difftime(3C)

directio(3C)

dirname(3C)

div(3C)

dladdr1(3C)

dladdr(3C)

dlclose(3C)

dldump(3C)

dlerror(3C)

dlinfo(3C)

dlmopen(3C)

dlopen(3C)

dlsym(3C)

dngettext(3C)

double_to_decimal(3C)

drand48(3C)

dup2(3C)

econvert(3C)

ecvt(3C)

_edata(3C)

edata(3C)

enable_extended_FILE_stdio(3C)

encrypt(3C)

_end(3C)

end(3C)

endgrent(3C)

endnetgrent(3C)

endpwent(3C)

endspent(3C)

endusershell(3C)

endutent(3C)

endutxent(3C)

erand48(3C)

errno(3C)

_etext(3C)

etext(3C)

euccol(3C)

euclen(3C)

eucscol(3C)

exit(3C)

_exithandle(3C)

extended_to_decimal(3C)

fattach(3C)

__fbufsize(3C)

fclose(3C)

fconvert(3C)

fcvt(3C)

FD_CLR(3C)

fdetach(3C)

FD_ISSET(3C)

fdopen(3C)

fdopendir(3C)

FD_SET(3C)

fdwalk(3C)

FD_ZERO(3C)

feof(3C)

ferror(3C)

fetch(3UCB)

fflush(3C)

ffs(3C)

fgetc(3C)

fgetgrent(3C)

fgetgrent_r(3C)

fgetpos(3C)

fgetpwent(3C)

fgetpwent_r(3C)

fgets(3C)

fgetspent(3C)

fgetspent_r(3C)

fgetwc(3C)

fgetws(3C)

fileno(3C)

file_to_decimal(3C)

finite(3C)

firstkey(3UCB)

__flbf(3C)

floating_to_decimal(3C)

flock(3UCB)

flockfile(3C)

_flushlbf(3C)

fmtmsg(3C)

fnmatch(3C)

fopen(3C)

fopen(3UCB)

fpclass(3C)

__fpending(3C)

fpgetmask(3C)

fpgetround(3C)

fpgetsticky(3C)

fprintf(3C)

fprintf(3UCB)

fpsetmask(3C)

fpsetround(3C)

fpsetsticky(3C)

__fpurge(3C)

fputc(3C)

fputs(3C)

fputwc(3C)

fputws(3C)

fread(3C)

__freadable(3C)

__freading(3C)

free(3C)

free(3MALLOC)

freopen(3C)

freopen(3UCB)

fscanf(3C)

fseek(3C)

fseeko(3C)

__fsetlocking(3C)

fsetpos(3C)

fsync(3C)

ftell(3C)

ftello(3C)

ftime(3C)

ftok(3C)

ftruncate(3C)

ftrylockfile(3C)

ftw(3C)

func_to_decimal(3C)

funlockfile(3C)

fwide(3C)

fwprintf(3C)

__fwritable(3C)

fwrite(3C)

__fwriting(3C)

fwscanf(3C)

gconvert(3C)

gcvt(3C)

getc(3C)

getchar(3C)

getchar_unlocked(3C)

getcpuid(3C)

getc_unlocked(3C)

getcwd(3C)

getdate(3C)

getdtablesize(3C)

getenv(3C)

getexecname(3C)

getextmntent(3C)

getgrent(3C)

getgrent_r(3C)

getgrgid(3C)

getgrgid_r(3C)

getgrnam(3C)

getgrnam_r(3C)

gethomelgroup(3C)

gethostid(3C)

gethostname(3C)

gethrtime(3C)

gethrvtime(3C)

getloadavg(3C)

getlogin(3C)

getlogin_r(3C)

getmntany(3C)

getmntent(3C)

getnetgrent(3C)

getnetgrent_r(3C)

getopt(3C)

getopt_clip(3C)

getopt_long(3C)

getopt_long_only(3C)

getpagesize(3C)

getpagesizes(3C)

getpass(3C)

getpassphrase(3C)

getpeerucred(3C)

getpriority(3C)

getpw(3C)

getpwent(3C)

getpwent_r(3C)

getpwnam(3C)

getpwnam_r(3C)

getpwuid(3C)

getpwuid_r(3C)

getrusage(3C)

gets(3C)

getspent(3C)

getspent_r(3C)

getspnam(3C)

getspnam_r(3C)

getsubopt(3C)

gettext(3C)

gettimeofday(3C)

gettimeofday(3UCB)

gettxt(3C)

getusershell(3C)

getutent(3C)

getutid(3C)

getutline(3C)

getutmp(3C)

getutmpx(3C)

getutxent(3C)

getutxid(3C)

getutxline(3C)

getvfsany(3C)

getvfsent(3C)

getvfsfile(3C)

getvfsspec(3C)

getw(3C)

getwc(3C)

getwchar(3C)

getwd(3C)

getwidth(3C)

getws(3C)

getzoneid(3C)

getzoneidbyname(3C)

getzonenamebyid(3C)

glob(3C)

globfree(3C)

gmtime(3C)

gmtime_r(3C)

grantpt(3C)

gsignal(3C)

hasmntopt(3C)

hcreate(3C)

hdestroy(3C)

hsearch(3C)

iconv(3C)

iconv_close(3C)

iconv_open(3C)

imaxabs(3C)

imaxdiv(3C)

index(3C)

initgroups(3C)

initstate(3C)

innetgr(3C)

insque(3C)

isaexec(3C)

isalnum(3C)

isalpha(3C)

isascii(3C)

isastream(3C)

isatty(3C)

isblank(3C)

iscntrl(3C)

isdigit(3C)

isenglish(3C)

isgraph(3C)

isideogram(3C)

islower(3C)

isnand(3C)

isnanf(3C)

isnumber(3C)

isphonogram(3C)

isprint(3C)

ispunct(3C)

isspace(3C)

isspecial(3C)

is_system_labeled(3C)

isupper(3C)

iswalnum(3C)

iswalpha(3C)

iswascii(3C)

iswblank(3C)

iswcntrl(3C)

iswctype(3C)

iswdigit(3C)

iswgraph(3C)

iswlower(3C)

iswprint(3C)

iswpunct(3C)

iswspace(3C)

iswupper(3C)

iswxdigit(3C)

isxdigit(3C)

jrand48(3C)

killpg(3C)

l64a(3C)

labs(3C)

lckpwdf(3C)

lcong48(3C)

ldiv(3C)

lfind(3C)

lfmt(3C)

llabs(3C)

lldiv(3C)

lltostr(3C)

localeconv(3C)

localtime(3C)

localtime_r(3C)

lockf(3C)

_longjmp(3C)

longjmp(3C)

_longjmp(3UCB)

longjmp(3UCB)

lrand48(3C)

lsearch(3C)

madvise(3C)

major(3C)

makecontext(3C)

makedev(3C)

mallinfo(3MALLOC)

malloc(3C)

malloc(3MALLOC)

mallocctl(3MALLOC)

mallopt(3MALLOC)

mapmalloc(3MALLOC)

mblen(3C)

mbrlen(3C)

mbrtowc(3C)

mbsinit(3C)

mbsrtowcs(3C)

mbstowcs(3C)

mbtowc(3C)

mctl(3UCB)

memalign(3C)

memalign(3MALLOC)

membar_consumer(3C)

membar_enter(3C)

membar_exit(3C)

membar_ops(3C)

membar_producer(3C)

memccpy(3C)

memchr(3C)

memcmp(3C)

memcpy(3C)

memmove(3C)

memory(3C)

memset(3C)

minor(3C)

mkfifo(3C)

mkstemp(3C)

mktemp(3C)

mktime(3C)

mlock(3C)

mlockall(3C)

monitor(3C)

mrand48(3C)

msync(3C)

mtmalloc(3MALLOC)

munlock(3C)

munlockall(3C)

mutex_consistent(3C)

mutex_destroy(3C)

mutex_init(3C)

mutex_lock(3C)

mutex_trylock(3C)

mutex_unlock(3C)

ndbm(3C)

nextkey(3UCB)

nftw(3C)

ngettext(3C)

nice(3UCB)

nlist(3UCB)

nl_langinfo(3C)

nrand48(3C)

offsetof(3C)

opendir(3C)

openlog(3C)

pclose(3C)

perror(3C)

pfmt(3C)

plock(3C)

popen(3C)

port_alert(3C)

port_associate(3C)

port_create(3C)

port_dissociate(3C)

port_get(3C)

port_getn(3C)

port_send(3C)

port_sendn(3C)

posix_openpt(3C)

posix_spawn(3C)

posix_spawnattr_destroy(3C)

posix_spawnattr_getflags(3C)

posix_spawnattr_getpgroup(3C)

posix_spawnattr_getschedparam(3C)

posix_spawnattr_getschedpolicy(3C)

posix_spawnattr_getsigdefault(3C)

posix_spawnattr_getsigmask(3C)

posix_spawnattr_init(3C)

posix_spawnattr_setflags(3C)

posix_spawnattr_setpgroup(3C)

posix_spawnattr_setschedparam(3C)

posix_spawnattr_setschedpolicy(3C)

posix_spawnattr_setsigdefault(3C)

posix_spawnattr_setsigmask(3C)

posix_spawn_file_actions_addclose(3C)

posix_spawn_file_actions_adddup2(3C)

posix_spawn_file_actions_addopen(3C)

posix_spawn_file_actions_destroy(3C)

posix_spawn_file_actions_init(3C)

posix_spawnp(3C)

printf(3C)

printf(3UCB)

printstack(3C)

priv_addset(3C)

priv_allocset(3C)

priv_copyset(3C)

priv_delset(3C)

priv_emptyset(3C)

priv_fillset(3C)

priv_freeset(3C)

priv_getbyname(3C)

priv_getbynum(3C)

priv_getsetbyname(3C)

priv_getsetbynum(3C)

priv_gettext(3C)

priv_ineffect(3C)

priv_intersect(3C)

priv_inverse(3C)

priv_isemptyset(3C)

priv_isequalset(3C)

priv_isfullset(3C)

priv_ismember(3C)

priv_issubset(3C)

priv_set(3C)

priv_set_to_str(3C)

priv_str_to_set(3C)

priv_union(3C)

pselect(3C)

pset_getloadavg(3C)

psiginfo(3C)

psignal(3C)

psignal(3UCB)

pthread_atfork(3C)

pthread_attr_destroy(3C)

pthread_attr_getdetachstate(3C)

pthread_attr_getguardsize(3C)

pthread_attr_getinheritsched(3C)

pthread_attr_getschedparam(3C)

pthread_attr_getschedpolicy(3C)

pthread_attr_getscope(3C)

pthread_attr_getstack(3C)

pthread_attr_getstackaddr(3C)

pthread_attr_getstacksize(3C)

pthread_attr_init(3C)

pthread_attr_setdetachstate(3C)

pthread_attr_setguardsize(3C)

pthread_attr_setinheritsched(3C)

pthread_attr_setschedparam(3C)

pthread_attr_setschedpolicy(3C)

pthread_attr_setscope(3C)

pthread_attr_setstack(3C)

pthread_attr_setstackaddr(3C)

pthread_attr_setstacksize(3C)

pthread_barrierattr_destroy(3C)

pthread_barrierattr_getpshared(3C)

pthread_barrierattr_init(3C)

pthread_barrierattr_setpshared(3C)

pthread_barrier_destroy(3C)

pthread_barrier_init(3C)

pthread_barrier_wait(3C)

pthread_cancel(3C)

pthread_cleanup_pop(3C)

pthread_cleanup_push(3C)

pthread_condattr_destroy(3C)

pthread_condattr_getclock(3C)

pthread_condattr_getpshared(3C)

pthread_condattr_init(3C)

pthread_condattr_setclock(3C)

pthread_condattr_setpshared(3C)

pthread_cond_broadcast(3C)

pthread_cond_destroy(3C)

pthread_cond_init(3C)

pthread_cond_reltimedwait_np(3C)

pthread_cond_signal(3C)

pthread_cond_timedwait(3C)

pthread_cond_wait(3C)

pthread_create(3C)

pthread_detach(3C)

pthread_equal(3C)

pthread_exit(3C)

pthread_getconcurrency(3C)

pthread_getschedparam(3C)

pthread_getspecific(3C)

pthread_join(3C)

pthread_key_create(3C)

pthread_key_delete(3C)

pthread_kill(3C)

pthread_mutexattr_destroy(3C)

pthread_mutexattr_getprioceiling(3C)

pthread_mutexattr_getprotocol(3C)

pthread_mutexattr_getpshared(3C)

pthread_mutexattr_getrobust_np(3C)

pthread_mutexattr_gettype(3C)

pthread_mutexattr_init(3C)

pthread_mutexattr_setprioceiling(3C)

pthread_mutexattr_setprotocol(3C)

pthread_mutexattr_setpshared(3C)

pthread_mutexattr_setrobust_np(3C)

pthread_mutexattr_settype(3C)

pthread_mutex_consistent_np(3C)

pthread_mutex_destroy(3C)

pthread_mutex_getprioceiling(3C)

pthread_mutex_init(3C)

pthread_mutex_lock(3C)

pthread_mutex_reltimedlock_np(3C)

pthread_mutex_setprioceiling(3C)

pthread_mutex_timedlock(3C)

pthread_mutex_trylock(3C)

pthread_mutex_unlock(3C)

pthread_once(3C)

pthread_rwlockattr_destroy(3C)

pthread_rwlockattr_getpshared(3C)

pthread_rwlockattr_init(3C)

pthread_rwlockattr_setpshared(3C)

pthread_rwlock_destroy(3C)

pthread_rwlock_init(3C)

pthread_rwlock_rdlock(3C)

pthread_rwlock_reltimedrdlock_np(3C)

pthread_rwlock_reltimedwrlock_np(3C)

pthread_rwlock_timedrdlock(3C)

pthread_rwlock_timedwrlock(3C)

pthread_rwlock_tryrdlock(3C)

pthread_rwlock_trywrlock(3C)

pthread_rwlock_unlock(3C)

pthread_rwlock_wrlock(3C)

pthread_self(3C)

pthread_setcancelstate(3C)

pthread_setcanceltype(3C)

pthread_setconcurrency(3C)

pthread_setschedparam(3C)

pthread_setschedprio(3C)

pthread_setspecific(3C)

pthread_sigmask(3C)

pthread_spin_destroy(3C)

pthread_spin_init(3C)

pthread_spin_lock(3C)

pthread_spin_trylock(3C)

pthread_spin_unlock(3C)

pthread_testcancel(3C)

ptrace(3C)

ptsname(3C)

putc(3C)

putchar(3C)

putchar_unlocked(3C)

putc_unlocked(3C)

putenv(3C)

putmntent(3C)

putpwent(3C)

puts(3C)

putspent(3C)

pututline(3C)

pututxline(3C)

putw(3C)

putwc(3C)

putwchar(3C)

putws(3C)

qeconvert(3C)

qfconvert(3C)

qgconvert(3C)

qsort(3C)

quadruple_to_decimal(3C)

raise(3C)

rand(3C)

rand(3UCB)

random(3C)

rand_r(3C)

rctlblk_get_enforced_value(3C)

rctlblk_get_firing_time(3C)

rctlblk_get_global_action(3C)

rctlblk_get_global_flags(3C)

rctlblk_get_local_action(3C)

rctlblk_get_local_flags(3C)

rctlblk_get_privilege(3C)

rctlblk_get_recipient_pid(3C)

rctlblk_get_value(3C)

rctlblk_set_local_action(3C)

rctlblk_set_local_flags(3C)

rctlblk_set_privilege(3C)

rctlblk_set_recipient_pid(3C)

rctlblk_set_value(3C)

rctlblk_size(3C)

rctl_walk(3C)

readdir(3C)

readdir(3UCB)

readdir_r(3C)

realloc(3C)

realloc(3MALLOC)

realpath(3C)

reboot(3C)

re_comp(3C)

re_exec(3C)

regcmp(3C)

regcomp(3C)

regerror(3C)

regex(3C)

regexec(3C)

regfree(3C)

remove(3C)

remque(3C)

resetmnttab(3C)

rewind(3C)

rewinddir(3C)

rindex(3C)

rwlock(3C)

rwlock_destroy(3C)

rwlock_init(3C)

rw_rdlock(3C)

rw_tryrdlock(3C)

rw_trywrlock(3C)

rw_unlock(3C)

rw_wrlock(3C)

scandir(3C)

scandir(3UCB)

scanf(3C)

schedctl_exit(3C)

schedctl_init(3C)

schedctl_lookup(3C)

schedctl_start(3C)

schedctl_stop(3C)

seconvert(3C)

seed48(3C)

seekdir(3C)

select(3C)

sema_destroy(3C)

sema_init(3C)

semaphore(3C)

sema_post(3C)

sema_trywait(3C)

sema_wait(3C)

setbuf(3C)

setbuffer(3C)

setcat(3C)

setenv(3C)

setgrent(3C)

sethostname(3C)

_setjmp(3C)

setjmp(3C)

_setjmp(3UCB)

setjmp(3UCB)

setkey(3C)

setlabel(3C)

setlinebuf(3C)

setlocale(3C)

setlogmask(3C)

setnetgrent(3C)

setpriority(3C)

setpwent(3C)

setspent(3C)

setstate(3C)

settimeofday(3C)

settimeofday(3UCB)

setusershell(3C)

setutent(3C)

setutxent(3C)

setvbuf(3C)

sfconvert(3C)

sgconvert(3C)

sig2str(3C)

sigaddset(3C)

sigblock(3UCB)

sigdelset(3C)

sigemptyset(3C)

sigfillset(3C)

sigfpe(3C)

sighold(3C)

sigignore(3C)

siginterrupt(3C)

siginterrupt(3UCB)

sigismember(3C)

siglongjmp(3C)

sigmask(3UCB)

signal(3C)

signal(3UCB)

sigpause(3C)

sigpause(3UCB)

sigrelse(3C)

sigset(3C)

sigsetjmp(3C)

sigsetmask(3UCB)

sigsetops(3C)

sigstack(3C)

sigstack(3UCB)

sigvec(3UCB)

single_to_decimal(3C)

sleep(3C)

sleep(3UCB)

smt_pause(3C)

snprintf(3C)

sprintf(3C)

sprintf(3UCB)

srand(3C)

srand(3UCB)

srand48(3C)

srandom(3C)

sscanf(3C)

ssignal(3C)

stack_getbounds(3C)

_stack_grow(3C)

stack_inbounds(3C)

stack_setbounds(3C)

stack_violation(3C)

stdio(3C)

store(3UCB)

str2sig(3C)

strcasecmp(3C)

strcat(3C)

strchr(3C)

strcmp(3C)

strcoll(3C)

strcpy(3C)

strcspn(3C)

strdup(3C)

strerror(3C)

strerror_r(3C)

strfmon(3C)

strftime(3C)

string(3C)

string_to_decimal(3C)

strlcat(3C)

strlcpy(3C)

strlen(3C)

strncasecmp(3C)

strncat(3C)

strncmp(3C)

strncpy(3C)

strpbrk(3C)

strptime(3C)

strrchr(3C)

strsignal(3C)

strspn(3C)

strstr(3C)

strtod(3C)

strtof(3C)

strtoimax(3C)

strtok(3C)

strtok_r(3C)

strtol(3C)

strtold(3C)

strtoll(3C)

strtoul(3C)

strtoull(3C)

strtoumax(3C)

strtows(3C)

strxfrm(3C)

swab(3C)

swapcontext(3C)

swprintf(3C)

swscanf(3C)

sync_instruction_memory(3C)

syscall(3UCB)

sysconf(3C)

syslog(3C)

sys_siglist(3UCB)

system(3C)

tcdrain(3C)

tcflow(3C)

tcflush(3C)

tcgetattr(3C)

tcgetpgrp(3C)

tcgetsid(3C)

tcsendbreak(3C)

tcsetattr(3C)

tcsetpgrp(3C)

tdelete(3C)

td_event_addset(3C_DB)

td_event_delset(3C_DB)

td_event_emptyset(3C_DB)

td_event_fillset(3C_DB)

td_eventisempty(3C_DB)

td_eventismember(3C_DB)

td_init(3C_DB)

td_log(3C_DB)

td_sync_get_info(3C_DB)

td_sync_get_stats(3C_DB)

td_sync_setstate(3C_DB)

td_sync_waiters(3C_DB)

td_ta_clear_event(3C_DB)

td_ta_delete(3C_DB)

td_ta_enable_stats(3C_DB)

td_ta_event_addr(3C_DB)

td_ta_event_getmsg(3C_DB)

td_ta_get_nthreads(3C_DB)

td_ta_get_ph(3C_DB)

td_ta_get_stats(3C_DB)

td_ta_map_addr2sync(3C_DB)

td_ta_map_id2thr(3C_DB)

td_ta_map_lwp2thr(3C_DB)

td_ta_new(3C_DB)

td_ta_reset_stats(3C_DB)

td_ta_setconcurrency(3C_DB)

td_ta_set_event(3C_DB)

td_ta_sync_iter(3C_DB)

td_ta_sync_tracking_enable(3C_DB)

td_ta_thr_iter(3C_DB)

td_ta_tsd_iter(3C_DB)

td_thr_clear_event(3C_DB)

td_thr_dbresume(3C_DB)

td_thr_dbsuspend(3C_DB)

td_thr_event_enable(3C_DB)

td_thr_event_getmsg(3C_DB)

td_thr_getfpregs(3C_DB)

td_thr_getgregs(3C_DB)

td_thr_get_info(3C_DB)

td_thr_getxregs(3C_DB)

td_thr_getxregsize(3C_DB)

td_thr_lockowner(3C_DB)

td_thr_set_event(3C_DB)

td_thr_setfpregs(3C_DB)

td_thr_setgregs(3C_DB)

td_thr_setprio(3C_DB)

td_thr_setsigpending(3C_DB)

td_thr_setxregs(3C_DB)

td_thr_sigsetmask(3C_DB)

td_thr_sleepinfo(3C_DB)

td_thr_tsd(3C_DB)

td_thr_validate(3C_DB)

tell(3C)

telldir(3C)

tempnam(3C)

termios(3C)

textdomain(3C)

tfind(3C)

thr_continue(3C)

thr_create(3C)

thr_exit(3C)

thr_getconcurrency(3C)

thr_getprio(3C)

thr_getspecific(3C)

thr_join(3C)

thr_keycreate(3C)

thr_kill(3C)

thr_main(3C)

thr_min_stack(3C)

thr_self(3C)

thr_setconcurrency(3C)

thr_setprio(3C)

thr_setspecific(3C)

thr_sigsetmask(3C)

thr_stksegment(3C)

thr_suspend(3C)

thr_yield(3C)

times(3UCB)

tmpfile(3C)

tmpnam(3C)

tmpnam_r(3C)

toascii(3C)

_tolower(3C)

tolower(3C)

_toupper(3C)

toupper(3C)

towctrans(3C)

towlower(3C)

towupper(3C)

truncate(3C)

tsearch(3C)

ttyname(3C)

ttyname_r(3C)

ttyslot(3C)

twalk(3C)

tzset(3C)

u8_strcmp(3C)

u8_textprep_str(3C)

u8_validate(3C)

ualarm(3C)

uconv_u16tou32(3C)

uconv_u16tou8(3C)

uconv_u32tou16(3C)

uconv_u32tou8(3C)

uconv_u8tou16(3C)

uconv_u8tou32(3C)

ucred_free(3C)

ucred_get(3C)

ucred_getegid(3C)

ucred_geteuid(3C)

ucred_getgroups(3C)

ucred_getlabel(3C)

ucred_getpflags(3C)

ucred_getpid(3C)

ucred_getprivset(3C)

ucred_getprojid(3C)

ucred_getrgid(3C)

ucred_getruid(3C)

ucred_getsgid(3C)

ucred_getsuid(3C)

ucred_getzoneid(3C)

ucred_size(3C)

ulckpwdf(3C)

ulltostr(3C)

umem_alloc(3MALLOC)

umem_cache_alloc(3MALLOC)

umem_cache_create(3MALLOC)

umem_cache_destroy(3MALLOC)

umem_cache_free(3MALLOC)

umem_debug(3MALLOC)

umem_free(3MALLOC)

umem_nofail_callback(3MALLOC)

umem_zalloc(3MALLOC)

ungetc(3C)

ungetwc(3C)

unlockpt(3C)

unordered(3C)

unsetenv(3C)

updwtmp(3C)

updwtmpx(3C)

usleep(3C)

utmpname(3C)

utmpxname(3C)

valloc(3C)

valloc(3MALLOC)

vasprintf(3C)

vfprintf(3C)

vfprintf(3UCB)

vfscanf(3C)

vfwprintf(3C)

vfwscanf(3C)

vlfmt(3C)

vpfmt(3C)

vprintf(3C)

vprintf(3UCB)

vscanf(3C)

vsnprintf(3C)

vsprintf(3C)

vsprintf(3UCB)

vsscanf(3C)

vswprintf(3C)

vswscanf(3C)

vsyslog(3C)

vwprintf(3C)

vwscanf(3C)

wait3(3C)

wait3(3UCB)

wait(3C)

wait(3UCB)

wait4(3C)

wait4(3UCB)

waitpid(3C)

waitpid(3UCB)

walkcontext(3C)

watchmalloc(3MALLOC)

watof(3C)

watoi(3C)

watol(3C)

watoll(3C)

wcrtomb(3C)

wcscat(3C)

wcschr(3C)

wcscmp(3C)

wcscoll(3C)

wcscpy(3C)

wcscspn(3C)

wcsetno(3C)

wcsftime(3C)

wcslen(3C)

wcsncat(3C)

wcsncmp(3C)

wcsncpy(3C)

wcspbrk(3C)

wcsrchr(3C)

wcsrtombs(3C)

wcsspn(3C)

wcsstr(3C)

wcstod(3C)

wcstof(3C)

wcstoimax(3C)

wcstok(3C)

wcstol(3C)

wcstold(3C)

wcstoll(3C)

wcstombs(3C)

wcstoul(3C)

wcstoull(3C)

wcstoumax(3C)

wcstring(3C)

wcswcs(3C)

wcswidth(3C)

wcsxfrm(3C)

wctob(3C)

wctomb(3C)

wctrans(3C)

wctype(3C)

wcwidth(3C)

WIFEXITED(3UCB)

WIFSIGNALED(3UCB)

WIFSTOPPED(3UCB)

windex(3C)

wmemchr(3C)

wmemcmp(3C)

wmemcpy(3C)

wmemmove(3C)

wmemset(3C)

wordexp(3C)

wordfree(3C)

wprintf(3C)

wrindex(3C)

wscanf(3C)

wscasecmp(3C)

wscat(3C)

wschr(3C)

wscmp(3C)

wscol(3C)

wscoll(3C)

wscpy(3C)

wscspn(3C)

wsdup(3C)

wslen(3C)

wsncasecmp(3C)

wsncat(3C)

wsncmp(3C)

wsncpy(3C)

wspbrk(3C)

wsprintf(3C)

wsrchr(3C)

wsscanf(3C)

wsspn(3C)

wstod(3C)

wstok(3C)

wstol(3C)

wstostr(3C)

wstring(3C)

wsxfrm(3C)

closefrom

, fdwalk

- close or iterate over open file descriptors

Synopsis

#include <stdlib.h>

void closefrom(int lowfd);
int fdwalk(int (*func)(void *, int), void *cd);

Description

The closefrom() function calls close(2) on all open file descriptors greater than or equal to lowfd.

The effect of closefrom(lowfd) is the same as the code

#include <sys/resource.h>
struct rlimit rl;
int i;

getrlimit(RLIMIT_NOFILE, &rl);
for (i = lowfd; i < rl.rlim_max; i++)
     (void) close(i);

except that close() is called only on file descriptors that are actually open, not on every possible file descriptor greater than or equal to lowfd, and close() is also called on any open file descriptors greater than or equal to rl.rlim_max (and lowfd), should any exist.

The fdwalk() function first makes a list of all currently open file descriptors. Then for each file descriptor in the list, it calls the user-defined function, func(cd, fd), passing it the pointer to the callback data, cd, and the value of the file descriptor from the list, fd. The list is processed in file descriptor value order, lowest numeric value first.

If func() returns a non-zero value, the iteration over the list is terminated and fdwalk() returns the non-zero value returned by func(). Otherwise, fdwalk() returns 0 after having called func() for every file descriptor in the list.

The fdwalk() function can be used for fine-grained control over the closing of file descriptors. For example, the closefrom() function can be implemented as:

static int
close_func(void *lowfdp, int fd)
{
     if (fd >= *(int *)lowfdp)
          (void) close(fd);
     return (0);
}

void
closefrom(int lowfd)
{
     (void) fdwalk(close_func, &lowfd);
}

The fdwalk() function can then be used to count the number of open files in the process.

Return Values

No return value is defined for closefrom(). If close() fails for any of the open file descriptors, the error is ignored and the file descriptors whose close() operation failed might remain open on return from closefrom().

The fdwalk() function returns the return value of the last call to the callback function func(), or 0 if func() is never called (no open files).

Errors

No errors are defined. The closefrom() and fdwalk() functions do not set errno but errno can be set by close() or by another function called by the callback function, func().

Files

/proc/self/fd

directory (list of open files)

Usage

The act of closing all open file descriptors should be performed only as the first action of a daemon process. Closing file descriptors that are in use elsewhere in the current process normally leads to disastrous results.

Attributes

See attributes(5) for descriptions of the following attributes:

ATTRIBUTE TYPE
ATTRIBUTE VALUE
MT-Level
Unsafe

See Also

close(2), getrlimit(2), proc(4), attributes(5)