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NAME |LIBRARY |SYNOPSIS |DESCRIPTION |NOTES |SEE ALSO |COLOPHON | |
errno(3) Library Functions Manualerrno(3)errno - number of last error
Standard C library (libc,-lc)
#include <errno.h>
The<errno.h> header file defines the integer variableerrno, which is set by system calls and some library functions in the event of an error to indicate what went wrong.errno The value inerrno is significant only when the return value of the call indicated an error (i.e., -1 from most system calls; -1 or NULL from most library functions); a function that succeedsis allowed to changeerrno. The value oferrno is never set to zero by any system call or library function. For some system calls and library functions (e.g.,getpriority(2)), -1 is a valid return on success. In such cases, a successful return can be distinguished from an error return by settingerrno to zero before the call, and then, if the call returns a status that indicates that an error may have occurred, checking to see iferrno has a nonzero value.errno is defined by the ISO C standard to be a modifiable lvalue of typeint, and must not be explicitly declared;errno may be a macro.errno is thread-local; setting it in one thread does not affect its value in any other thread.Error numbers and names Valid error numbers are all positive numbers. The<errno.h> header file defines symbolic names for each of the possible error numbers that may appear inerrno. All the error names specified by POSIX.1 must have distinct values, with the exception ofEAGAINandEWOULDBLOCK, which may be the same. On Linux, these two have the same value on all architectures. The error numbers that correspond to each symbolic name vary across UNIX systems, and even across different architectures on Linux. Therefore, numeric values are not included as part of the list of error names below. Theperror(3) andstrerror(3) functions can be used to convert these names to corresponding textual error messages. On any particular Linux system, one can obtain a list of all symbolic error names and the corresponding error numbers using theerrno(1) command (part of themoreutils package): $errno -l; EPERM 1 Operation not permitted ENOENT 2 No such file or directory ESRCH 3 No such process EINTR 4 Interrupted system call EIO 5 Input/output error ... Theerrno(1) command can also be used to look up individual error numbers and names, and to search for errors using strings from the error description, as in the following examples: $errno 2; ENOENT 2 No such file or directory $errno ESRCH; ESRCH 3 No such process $errno -s permission; EACCES 13 Permission deniedList of error names In the list of the symbolic error names below, various names are marked as follows:POSIX.1-2001 The name is defined by POSIX.1-2001, and is defined in later POSIX.1 versions, unless otherwise indicated.POSIX.1-2008 The name is defined in POSIX.1-2008, but was not present in earlier POSIX.1 standards.C99 The name is defined by C99. Below is a list of the symbolic error names that are defined on Linux:E2BIGArgument list too long (POSIX.1-2001).EACCESPermission denied (POSIX.1-2001).EADDRINUSE Address already in use (POSIX.1-2001).EADDRNOTAVAIL Address not available (POSIX.1-2001).EAFNOSUPPORT Address family not supported (POSIX.1-2001).EAGAINResource temporarily unavailable (may be the same value asEWOULDBLOCK) (POSIX.1-2001).EALREADY Connection already in progress (POSIX.1-2001).EBADEInvalid exchange.EBADFBad file descriptor (POSIX.1-2001).EBADFDFile descriptor in bad state.EBADMSG Bad message (POSIX.1-2001).EBADRInvalid request descriptor.EBADRQC Invalid request code.EBADSLT Invalid slot.EBUSYDevice or resource busy (POSIX.1-2001).ECANCELED Operation canceled (POSIX.1-2001).ECHILDNo child processes (POSIX.1-2001).ECHRNGChannel number out of range.ECOMMCommunication error on send.ECONNABORTED Connection aborted (POSIX.1-2001).ECONNREFUSED Connection refused (POSIX.1-2001).ECONNRESET Connection reset (POSIX.1-2001).EDEADLK Resource deadlock avoided (POSIX.1-2001).EDEADLOCK On most architectures, a synonym forEDEADLK. On some architectures (e.g., Linux MIPS, PowerPC, SPARC), it is a separate error code "File locking deadlock error".EDESTADDRREQ Destination address required (POSIX.1-2001).EDOMMathematics argument out of domain of function (POSIX.1, C99).EDQUOTDisk quota exceeded (POSIX.1-2001).EEXISTFile exists (POSIX.1-2001).EFAULTBad address (POSIX.1-2001).EFBIGFile too large (POSIX.1-2001).EHOSTDOWN Host is down.EHOSTUNREACH Host is unreachable (POSIX.1-2001).EHWPOISON Memory page has hardware error.EIDRMIdentifier removed (POSIX.1-2001).EILSEQInvalid or incomplete multibyte or wide character (POSIX.1, C99). The text shown here is the glibc error description; in POSIX.1, this error is described as "Illegal byte sequence".EINPROGRESS Operation in progress (POSIX.1-2001).EINTRInterrupted function call (POSIX.1-2001); seesignal(7).EINVALInvalid argument (POSIX.1-2001).EIOInput/output error (POSIX.1-2001).EISCONN Socket is connected (POSIX.1-2001).EISDIRIs a directory (POSIX.1-2001).EISNAMIs a named type file.EKEYEXPIRED Key has expired.EKEYREJECTED Key was rejected by service.EKEYREVOKED Key has been revoked.EL2HLTLevel 2 halted.EL2NSYNC Level 2 not synchronized.EL3HLTLevel 3 halted.EL3RSTLevel 3 reset.ELIBACC Cannot access a needed shared library.ELIBBAD Accessing a corrupted shared library.ELIBMAX Attempting to link in too many shared libraries.ELIBSCN .lib section in a.out corruptedELIBEXEC Cannot exec a shared library directly.ELNRNGLink number out of range.ELOOPToo many levels of symbolic links (POSIX.1-2001).EMEDIUMTYPE Wrong medium type.EMFILEToo many open files (POSIX.1-2001). Commonly caused by exceeding theRLIMIT_NOFILEresource limit described ingetrlimit(2). Can also be caused by exceeding the limit specified in/proc/sys/fs/nr_open.EMLINKToo many links (POSIX.1-2001).EMSGSIZE Message too long (POSIX.1-2001).EMULTIHOP Multihop attempted (POSIX.1-2001).ENAMETOOLONG Filename too long (POSIX.1-2001).ENETDOWN Network is down (POSIX.1-2001).ENETRESET Connection aborted by network (POSIX.1-2001).ENETUNREACH Network unreachable (POSIX.1-2001).ENFILEToo many open files in system (POSIX.1-2001). On Linux, this is probably a result of encountering the/proc/sys/fs/file-max limit (seeproc(5)).ENOANONo anode.ENOBUFS No buffer space available (POSIX.1 (XSI STREAMS option)).ENODATA The named attribute does not exist, or the process has no access to this attribute; seexattr(7). In POSIX.1-2001 (XSI STREAMS option), this error was described as "No message is available on the STREAM head read queue".ENODEVNo such device (POSIX.1-2001).ENOENTNo such file or directory (POSIX.1-2001). Typically, this error results when a specified pathname does not exist, or one of the components in the directory prefix of a pathname does not exist, or the specified pathname is a dangling symbolic link.ENOEXEC Exec format error (POSIX.1-2001).ENOKEYRequired key not available.ENOLCKNo locks available (POSIX.1-2001).ENOLINK Link has been severed (POSIX.1-2001).ENOMEDIUM No medium found.ENOMEMNot enough space/cannot allocate memory (POSIX.1-2001).ENOMSGNo message of the desired type (POSIX.1-2001).ENONETMachine is not on the network.ENOPKGPackage not installed.ENOPROTOOPT Protocol not available (POSIX.1-2001).ENOSPCNo space left on device (POSIX.1-2001).ENOSRNo STREAM resources (POSIX.1 (XSI STREAMS option)).ENOSTRNot a STREAM (POSIX.1 (XSI STREAMS option)).ENOSYSFunction not implemented (POSIX.1-2001).ENOTBLK Block device required.ENOTCONN The socket is not connected (POSIX.1-2001).ENOTDIR Not a directory (POSIX.1-2001).ENOTEMPTY Directory not empty (POSIX.1-2001).ENOTRECOVERABLE State not recoverable (POSIX.1-2008).ENOTSOCK Not a socket (POSIX.1-2001).ENOTSUP Operation not supported (POSIX.1-2001).ENOTTYInappropriate I/O control operation (POSIX.1-2001).ENOTUNIQ Name not unique on network.ENXIONo such device or address (POSIX.1-2001).EOPNOTSUPP Operation not supported on socket (POSIX.1-2001). (ENOTSUPandEOPNOTSUPPhave the same value on Linux, but according to POSIX.1 these error values should be distinct.)EOVERFLOW Value too large to be stored in data type (POSIX.1-2001).EOWNERDEAD Owner died (POSIX.1-2008).EPERMOperation not permitted (POSIX.1-2001).EPFNOSUPPORT Protocol family not supported.EPIPEBroken pipe (POSIX.1-2001).EPROTOProtocol error (POSIX.1-2001).EPROTONOSUPPORT Protocol not supported (POSIX.1-2001).EPROTOTYPE Protocol wrong type for socket (POSIX.1-2001).ERANGEResult too large (POSIX.1, C99).EREMCHG Remote address changed.EREMOTE Object is remote.EREMOTEIO Remote I/O error.ERESTART Interrupted system call should be restarted.ERFKILL Operation not possible due to RF-kill.EROFSRead-only filesystem (POSIX.1-2001).ESHUTDOWN Cannot send after transport endpoint shutdown.ESPIPEInvalid seek (POSIX.1-2001).ESOCKTNOSUPPORT Socket type not supported.ESRCHNo such process (POSIX.1-2001).ESTALEStale file handle (POSIX.1-2001). This error can occur for NFS and for other filesystems.ESTRPIPE Streams pipe error.ETIMETimer expired (POSIX.1 (XSI STREAMS option)). (POSIX.1 says "STREAMioctl(2) timeout".)ETIMEDOUT Connection timed out (POSIX.1-2001).ETOOMANYREFS Too many references: cannot splice.ETXTBSY Text file busy (POSIX.1-2001).EUCLEAN Structure needs cleaning.EUNATCH Protocol driver not attached.EUSERSToo many users.EWOULDBLOCK Operation would block (may be same value asEAGAIN) (POSIX.1-2001).EXDEVInvalid cross-device link (POSIX.1-2001).EXFULLExchange full.
A common mistake is to do if (somecall() == -1) { printf("somecall() failed\n"); if (errno == ...) { ... } } whereerrno no longer needs to have the value it had upon return fromsomecall() (i.e., it may have been changed by theprintf(3)). If the value oferrno should be preserved across a library call, it must be saved: if (somecall() == -1) { int errsv = errno; printf("somecall() failed\n"); if (errsv == ...) { ... } } Note that the POSIX threads APIs donot seterrno on error. Instead, on failure they return an error number as the function result. These error numbers have the same meanings as the error numbers returned inerrno by other APIs. On some ancient systems,<errno.h> was not present or did not declareerrno, so that it was necessary to declareerrno manually (i.e.,extern int errno).Do not do this. It long ago ceased to be necessary, and it will cause problems with modern versions of the C library.errno(1),err(3),error(3),perror(3),strerror(3)
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If you discover any rendering problems in this HTML version of the page, or you believe there is a better or more up- to-date source for the page, or you have corrections or improvements to the information in this COLOPHON (which isnot part of the original manual page), send a mail to man-pages@man7.orgLinux man-pages 6.15 2025-05-17errno(3)Pages that refer to this page:errno.h(0p), netdb.h(0p), signal.h(0p), gawk(1), mv(1p), strace(1), accept(2), access(2), acct(2), add_key(2), adjtimex(2), alloc_hugepages(2), arch_prctl(2), bind(2), bpf(2), brk(2), cacheflush(2), cachestat(2), capget(2), chdir(2), chmod(2), chown(2), chroot(2), clock_getres(2), clone(2), close(2), close_range(2), connect(2), copy_file_range(2), create_module(2), delete_module(2), dup(2), epoll_create(2), epoll_ctl(2), epoll_wait(2), eventfd(2), execve(2), execveat(2), fallocate(2), fanotify_init(2), fanotify_mark(2), FAT_IOCTL_GET_VOLUME_ID(2const), FAT_IOCTL_SET_ATTRIBUTES(2const), fcntl(2), fcntl_locking(2), 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KEYCTL_GET_PERSISTENT(2const), KEYCTL_GET_SECURITY(2const), KEYCTL_INSTANTIATE(2const), KEYCTL_INVALIDATE(2const), KEYCTL_JOIN_SESSION_KEYRING(2const), KEYCTL_LINK(2const), KEYCTL_READ(2const), KEYCTL_RESTRICT_KEYRING(2const), KEYCTL_REVOKE(2const), KEYCTL_SEARCH(2const), KEYCTL_SESSION_TO_PARENT(2const), KEYCTL_SETPERM(2const), KEYCTL_SET_REQKEY_KEYRING(2const), KEYCTL_SET_TIMEOUT(2const), KEYCTL_UNLINK(2const), KEYCTL_UPDATE(2const), kill(2), landlock_add_rule(2), landlock_create_ruleset(2), landlock_restrict_self(2), link(2), listen(2), listmount(2), listxattr(2), llseek(2), lookup_dcookie(2), lseek(2), madvise(2), mbind(2), membarrier(2), memfd_create(2), memfd_secret(2), migrate_pages(2), mincore(2), mkdir(2), mknod(2), mlock(2), mmap2(2), mmap(2), modify_ldt(2), mount(2), mount_setattr(2), move_pages(2), mprotect(2), mremap(2), msgctl(2), msgget(2), msgop(2), msync(2), nanosleep(2), nfsservctl(2), nice(2), NS_GET_NSTYPE(2const), NS_GET_OWNER_UID(2const), NS_GET_USERNS(2const), 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PR_GET_TIMING(2const), PR_GET_TSC(2const), PR_GET_UNALIGN(2const), PR_MCE_KILL(2const), PR_MCE_KILL_CLEAR(2const), PR_MCE_KILL_GET(2const), PR_MCE_KILL_SET(2const), PR_MPX_ENABLE_MANAGEMENT(2const), process_madvise(2), process_vm_readv(2), PR_PAC_RESET_KEYS(2const), PR_SET_CHILD_SUBREAPER(2const), PR_SET_DUMPABLE(2const), PR_SET_ENDIAN(2const), PR_SET_FPEMU(2const), PR_SET_FPEXC(2const), PR_SET_FP_MODE(2const), PR_SET_IO_FLUSHER(2const), PR_SET_KEEPCAPS(2const), PR_SET_MDWE(2const), PR_SET_MM(2const), PR_SET_MM_ARG_START(2const), PR_SET_MM_AUXV(2const), PR_SET_MM_BRK(2const), PR_SET_MM_EXE_FILE(2const), PR_SET_MM_MAP(2const), PR_SET_MM_START_BRK(2const), PR_SET_MM_START_CODE(2const), PR_SET_MM_START_DATA(2const), PR_SET_MM_START_STACK(2const), PR_SET_NAME(2const), PR_SET_NO_NEW_PRIVS(2const), PR_SET_PDEATHSIG(2const), PR_SET_PTRACER(2const), PR_SET_SECCOMP(2const), PR_SET_SECUREBITS(2const), PR_SET_SPECULATION_CTRL(2const), PR_SET_SYSCALL_USER_DISPATCH(2const), PR_SET_TAGGED_ADDR_CTRL(2const), PR_SET_THP_DISABLE(2const), PR_SET_TIMERSLACK(2const), PR_SET_TIMING(2const), PR_SET_TSC(2const), PR_SET_UNALIGN(2const), PR_SET_VMA(2const), PR_SVE_GET_VL(2const), PR_SVE_SET_VL(2const), PR_TASK_PERF_EVENTS_DISABLE(2const), ptrace(2), query_module(2), quotactl(2), read(2), readahead(2), readdir(2), readlink(2), readv(2), reboot(2), recv(2), recvmmsg(2), remap_file_pages(2), removexattr(2), rename(2), request_key(2), restart_syscall(2), rmdir(2), rt_sigqueueinfo(2), s390_guarded_storage(2), s390_pci_mmio_write(2), s390_runtime_instr(2), s390_sthyi(2), sched_get_priority_max(2), sched_rr_get_interval(2), sched_setaffinity(2), sched_setattr(2), sched_setparam(2), sched_setscheduler(2), sched_yield(2), seccomp(2), seccomp_unotify(2), select(2), select_tut(2), semctl(2), semget(2), semop(2), send(2), sendfile(2), sendmmsg(2), seteuid(2), setfsgid(2), setfsuid(2), setgid(2), set_mempolicy(2), setns(2), setpgid(2), setresuid(2), setreuid(2), setsid(2), 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acl_to_any_text(3), acl_to_text(3), acl_valid(3), acos(3), acos(3p), acosh(3), acosh(3p), adjtime(3), aio_cancel(3), aio_cancel(3p), aio_error(3), aio_error(3p), aio_fsync(3), aio_fsync(3p), aio_read(3), aio_read(3p), aio_return(3), aio_return(3p), aio_suspend(3), aio_suspend(3p), aio_write(3), aio_write(3p), alphasort(3p), asin(3), asin(3p), asinh(3p), asprintf(3), atan2(3p), atan(3p), atanh(3), atanh(3p), atoi(3), attr_get(3), attr_list(3), attr_multi(3), attr_remove(3), attr_set(3), audit_open(3), avc_add_callback(3), avc_compute_create(3), avc_context_to_sid(3), avc_has_perm(3), avc_init(3), avc_netlink_loop(3), avc_open(3), bind(3p), bindresvport(3), btree(3), calloc(3p), canonicalize_file_name(3), cap_clear(3), cap_from_text(3), cap_get_file(3), cap_get_proc(3), cap_iab(3), cap_init(3), cap_launch(3), catclose(3p), catgets(3p), catopen(3), catopen(3p), ceil(3), cfree(3), cfsetispeed(3p), cfsetospeed(3p), chdir(3p), chmod(3p), chown(3p), clearerr(3p), clock_getres(3p), close(3p), closedir(3), closedir(3p), closelog(3p), confstr(3), confstr(3p), connect(3p), context_new(3), cos(3), cos(3p), cosh(3), cosh(3p), crypt(3p), ctime(3), daemon(3), dbopen(3), dirfd(3), dirfd(3p), dup(3p), duplocale(3), duplocale(3p), encrypt(3), encrypt(3p), endgrent(3p), endpwent(3p), erf(3), erf(3p), erfc(3), erfc(3p), err(3), errno(3p), error(3), euidaccess(3), exec(3), exec(3p), _Exit(3p), exp10(3), exp2(3p), exp(3), exp(3p), expm1(3), expm1(3p), fattach(3p), fchdir(3p), fchmod(3p), fchown(3p), fclose(3), fclose(3p), fcntl(3p), fdatasync(3p), fdetach(3p), fdim(3), fdim(3p), fdopen(3p), fdopendir(3p), feof(3p), ferror(3), ferror(3p), fexecve(3), fflush(3), fflush(3p), fgetc(3p), fgetgrent(3), fgetpos(3p), fgetpwent(3), fgets(3p), fgetwc(3), fgetwc(3p), fgetws(3p), fileno(3), fileno(3p), floor(3), fma(3), fma(3p), fmemopen(3), fmemopen(3p), fmod(3), fmod(3p), fopen(3), fopen(3p), fork(3p), form(3x), form_cursor(3x), form_driver(3x), form_field(3x), form_field_attributes(3x), form_field_buffer(3x), form_field_info(3x), form_field_just(3x), form_field_opts(3x), form_fieldtype(3x), form_field_validation(3x), form_hook(3x), form_opts(3x), form_page(3x), form_post(3x), form_win(3x), fpathconf(3), fpathconf(3p), fprintf(3p), fpurge(3), fputc(3p), fputs(3p), fputwc(3), fputwc(3p), fputws(3p), fread(3p), freeaddrinfo(3p), freopen(3p), fscanf(3p), fseek(3), fseek(3p), fseeko(3), fsetpos(3p), fstat(3p), fstatat(3p), fstatvfs(3p), fsync(3p), ftell(3p), ftok(3), ftok(3p), ftruncate(3p), fts(3), ftw(3p), futimens(3p), futimes(3), fwide(3p), fwprintf(3p), fwrite(3p), fwscanf(3p), getaddrinfo(3), getcontext(3), getcwd(3), getcwd(3p), getdate(3), getdate(3p), getdelim(3p), getdirentries(3), getegid(3p), getentropy(3), geteuid(3p), getexeccon(3), getfilecon(3), getgid(3p), getgrent(3), getgrgid(3p), getgrnam(3), getgrnam(3p), getgroups(3p), gethostid(3), getifaddrs(3), getitimer(3p), getline(3), getlogin(3), getlogin(3p), getmsg(3p), getnameinfo(3), getnameinfo(3p), getopt(3p), getpass(3), getpeername(3p), getpgid(3p), get_phys_pages(3), getpriority(3p), getpt(3), getpw(3), getpwent(3), getpwnam(3), getpwnam(3p), getpwuid(3p), getrlimit(3p), getrusage(3p), gets(3p), getseuserbyname(3), getsid(3p), getsockname(3p), getsockopt(3p), getspnam(3), getuid(3p), getutent(3), getwchar(3), glob(3), glob(3p), gmtime(3p), gnutls_transport_set_errno(3), grantpt(3), grantpt(3p), handle(3), hash(3), hsearch(3), hypot(3), hypot(3p), ibv_free_device_list(3), ibv_get_device_list(3), iconv(3), iconv(3p), iconv_close(3), iconv_close(3p), iconv_open(3), iconv_open(3p), if_indextoname(3p), if_nameindex(3), if_nameindex(3p), if_nametoindex(3), ilogb(3), ilogb(3p), inet_net_pton(3), inet_ntop(3), inet_ntop(3p), inet_pton(3), initgroups(3), intro(3), ioctl(3p), io_uring_prep_accept(3), io_uring_prep_accept_direct(3), io_uring_prep_bind(3), io_uring_prep_close(3), io_uring_prep_close_direct(3), io_uring_prep_cmd_discard(3), io_uring_prep_connect(3), io_uring_prep_epoll_wait(3), io_uring_prep_fadvise(3), io_uring_prep_fadvise64(3), io_uring_prep_fallocate(3), io_uring_prep_fsync(3), io_uring_prep_ftruncate(3), io_uring_prep_futex_wait(3), io_uring_prep_futex_waitv(3), io_uring_prep_futex_wake(3), io_uring_prep_link(3), io_uring_prep_linkat(3), io_uring_prep_listen(3), io_uring_prep_madvise(3), io_uring_prep_madvise64(3), io_uring_prep_mkdir(3), io_uring_prep_mkdirat(3), io_uring_prep_multishot_accept(3), io_uring_prep_multishot_accept_direct(3), io_uring_prep_open(3), io_uring_prep_openat2(3), io_uring_prep_openat2_direct(3), io_uring_prep_openat(3), io_uring_prep_openat_direct(3), io_uring_prep_open_direct(3), io_uring_prep_pipe(3), io_uring_prep_poll_add(3), io_uring_prep_poll_multishot(3), io_uring_prep_read(3), io_uring_prep_read_fixed(3), io_uring_prep_read_multishot(3), io_uring_prep_readv2(3), io_uring_prep_readv(3), io_uring_prep_recv(3), io_uring_prep_recvmsg(3), io_uring_prep_recvmsg_multishot(3), io_uring_prep_recv_multishot(3), io_uring_prep_rename(3), io_uring_prep_renameat(3), io_uring_prep_send(3), io_uring_prep_send_bundle(3), io_uring_prep_sendmsg(3), io_uring_prep_sendmsg_zc(3), io_uring_prep_sendto(3), io_uring_prep_send_zc(3), io_uring_prep_send_zc_fixed(3), io_uring_prep_shutdown(3), io_uring_prep_socket(3), io_uring_prep_socket_direct(3), io_uring_prep_socket_direct_alloc(3), io_uring_prep_splice(3), io_uring_prep_statx(3), io_uring_prep_symlink(3), io_uring_prep_symlinkat(3), io_uring_prep_sync_file_range(3), io_uring_prep_tee(3), io_uring_prep_unlink(3), io_uring_prep_unlinkat(3), io_uring_prep_waitid(3), io_uring_prep_write(3), io_uring_prep_write_fixed(3), io_uring_prep_writev2(3), io_uring_prep_writev(3), isastream(3p), isatty(3), isatty(3p), isfdtype(3), j0(3), j0(3p), keyctl_capabilities(3), keyctl_chown(3), keyctl_clear(3), keyctl_describe(3), keyctl_get_keyring_ID(3), keyctl_get_persistent(3), keyctl_get_security(3), keyctl_instantiate(3), keyctl_invalidate(3), keyctl_join_session_keyring(3), keyctl_link(3), keyctl_move(3), keyctl_pkey_encrypt(3), keyctl_pkey_query(3), keyctl_pkey_sign(3), keyctl_read(3), keyctl_restrict_keyring(3), keyctl_revoke(3), keyctl_search(3), keyctl_session_to_parent(3), keyctl_setperm(3), keyctl_set_reqkey_keyring(3), keyctl_set_timeout(3), keyctl_update(3), keyctl_watch_key(3), kill(3p), killpg(3), lchown(3p), ldap_dup(3), ldap_get_dn(3), ldap_open(3), ldexp(3), ldexp(3p), lgamma(3), lgamma(3p), libcap(3), libmagic(3), libpsx(3), link(3p), lio_listio(3), lio_listio(3p), listen(3p), llrint(3p), llround(3p), localtime(3p), lockf(3), lockf(3p), log10(3p), log1p(3), log1p(3p), log2(3p), log(3), log(3p), logb(3), logb(3p), lrint(3), lrint(3p), lround(3), lround(3p), lseek(3p), makecontext(3), malloc(3), malloc(3p), malloc_info(3), mallopt(3), matherr(3), mblen(3p), mbrlen(3), mbrlen(3p), mbrtowc(3), mbrtowc(3p), mbsnrtowcs(3), mbsrtowcs(3), mbsrtowcs(3p), mbstowcs(3p), mbtowc(3p), menu(3x), menu_attributes(3x), menu_cursor(3x), menu_driver(3x), menu_format(3x), menu_hook(3x), menu_items(3x), menu_mark(3x), menu_new(3x), menu_opts(3x), menu_pattern(3x), menu_post(3x), menu_win(3x), mitem_current(3x), mitem_new(3x), mitem_opts(3x), mitem_value(3x), mkdir(3p), mkdtemp(3), mkdtemp(3p), mkfifo(3), mkfifo(3p), mknod(3p), mkstemp(3), mktemp(3), mktime(3p), mlock(3p), mlockall(3p), mmap(3p), mmv_stats_init(3), mmv_stats_registry(3), mpool(3), mprotect(3p), mq_close(3), mq_close(3p), mq_getattr(3), mq_getattr(3p), mq_notify(3), mq_notify(3p), mq_open(3), mq_open(3p), mq_receive(3), mq_receive(3p), mq_send(3), mq_send(3p), mq_setattr(3p), mq_unlink(3), mq_unlink(3p), msgctl(3p), msgget(3p), msgrcv(3p), msgsnd(3p), msync(3p), munmap(3p), nanosleep(3p), newlocale(3), newlocale(3p), nextafter(3), nextafter(3p), nftw(3p), nice(3p), numa(3), open(3p), opendir(3), open_memstream(3), open_memstream(3p), openpty(3), pause(3p), pclose(3p), pcpintro(3), perror(3), perror(3p), pipe(3p), pmfault(3), pmfstring(3), pmrecord(3), poll(3p), popen(3), popen(3p), posix_fallocate(3), posix_memalign(3), posix_openpt(3), posix_openpt(3p), posix_typed_mem_open(3p), pow(3), pow(3p), printf(3), probe::kprocess.exec_complete(3stap), pselect(3p), psiginfo(3p), pthread_sigmask(3p), ptsname(3), ptsname(3p), putenv(3), putenv(3p), putmsg(3p), putpwent(3), puts(3p), putwchar(3), raise(3p), random(3), random_r(3), rcmd(3), read(3p), readdir(3), readdir(3p), readlink(3p), realloc(3p), realpath(3), realpath(3p), recno(3), recursive_key_scan(3), recv(3p), recvfrom(3p), recvmsg(3p), regcomp(3p), remainder(3), remainder(3p), remove(3), remquo(3), remquo(3p), rename(3p), rewind(3p), rint(3), rint(3p), rmdir(3p), round(3), rpmatch(3), rtime(3), scalb(3), scalbln(3), scalbln(3p), scandir(3), scanf(3), sched_getcpu(3), sched_getparam(3p), sched_get_priority_max(3p), sched_getscheduler(3p), sched_rr_get_interval(3p), sched_setparam(3p), sched_setscheduler(3p), sched_yield(3p), sctp_bindx(3), sctp_connectx(3), sctp_peeloff(3), sd_bus_error(3), sd_bus_error_add_map(3), sd-bus-errors(3), sd_bus_message_new_method_error(3), sd_bus_process(3), sd_bus_wait(3), sd_journal_print(3), seccomp_export_bpf(3), seccomp_init(3), seccomp_load(3), seccomp_notify_alloc(3), seccomp_precompute(3), seccomp_rule_add(3), security_class_to_string(3), selabel_digest(3), selabel_lookup(3), selabel_lookup_best_match(3), selabel_open(3), selinux_file_context_verify(3), selinux_raw_context_to_color(3), selinux_restorecon(3), selinux_restorecon_default_handle(3), selinux_restorecon_set_alt_rootpath(3), selinux_restorecon_xattr(3), selinux_set_callback(3), selinux_set_mapping(3), sem_close(3), sem_close(3p), semctl(3p), sem_destroy(3), sem_destroy(3p), semget(3p), sem_getvalue(3), sem_getvalue(3p), sem_init(3), sem_init(3p), semop(3p), sem_open(3), sem_open(3p), sem_post(3), sem_post(3p), sem_timedwait(3p), sem_trywait(3p), sem_unlink(3), sem_unlink(3p), sem_wait(3), send(3p), sendmsg(3p), sendto(3p), setbuf(3), setbuf(3p), setegid(3p), setenv(3), setenv(3p), seteuid(3p), setfilecon(3), setgid(3p), setkey(3p), setpgid(3p), setregid(3p), setreuid(3p), setsid(3p), setsockopt(3p), setuid(3p), setvbuf(3p), shmat(3p), shmctl(3p), shmdt(3p), shmget(3p), shm_open(3), shm_open(3p), shm_unlink(3p), shutdown(3p), sigaction(3p), sigaddset(3p), sigaltstack(3p), sigdelset(3p), sigemptyset(3p), sigfillset(3p), sighold(3p), siginterrupt(3), siginterrupt(3p), sigismember(3p), signal(3p), sigpause(3), sigpending(3p), sigqueue(3), sigqueue(3p), sigset(3), sigsetops(3), sigsuspend(3p), sigtimedwait(3p), sigvec(3), sin(3), sin(3p), sincos(3), sinh(3), sinh(3p), sockatmark(3), sockatmark(3p), socket(3p), socketpair(3p), sqrt(3), sqrt(3p), statvfs(3), strcoll(3p), strdup(3), strdup(3p), strerror(3), strerror(3p), strfmon(3), strfmon(3p), strftime(3), strsignal(3p), strtod(3), strtod(3p), strtoimax(3), strtoimax(3p), strtol(3), strtol(3p), strtoul(3), strtoul(3p), strxfrm(3p), symlink(3p), sysconf(3), sysconf(3p), syslog(3), system(3), system(3p), tan(3), tan(3p), tanh(3p), tcdrain(3p), tcflow(3p), tcflush(3p), tcgetattr(3p), tcgetpgrp(3), tcgetpgrp(3p), tcgetsid(3), tcgetsid(3p), tcsendbreak(3p), tcsetattr(3p), tcsetpgrp(3p), telldir(3), tempnam(3), tempnam(3p), termios(3), tgamma(3), tgamma(3p), timegm(3), timer_create(3p), timer_delete(3p), timer_getoverrun(3p), times(3p), tmpfile(3), tmpfile(3p), towctrans(3p), tracefs_filter_string_append(3), truncate(3p), ttyname(3), ttyname(3p), udev_device_new_from_syspath(3), ulimit(3), ulimit(3p), uname(3p), ungetwc(3), unlink(3p), unlockpt(3), unlockpt(3p), unsetenv(3p), uselocale(3), uselocale(3p), usleep(3), utime(3p), wait(3p), waitid(3p), wcrtomb(3), wcrtomb(3p), wcscoll(3p), wcsdup(3), wcsdup(3p), wcsnrtombs(3), wcsrtombs(3), wcsrtombs(3p), wcstod(3p), wcstoimax(3p), wcstol(3p), wcstoul(3p), wcsxfrm(3p), wctrans(3p), wordexp(3p), wprintf(3), write(3p), writev(3p), y0(3), y0(3p), random(4), proc_sys_fs(5), selabel_file(5), sudo_plugin(5), systemd.exec(5), cpuset(7), fanotify(7), io_uring(7), ip(7), man-pages(7), math_error(7), pipe(7), pthreads(7), signal-safety(7), socket(7), spufs(7), string_copying(7), systemd.journal-fields(7), tcp(7), unix(7), ausearch(8)
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