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sysdecode_enum(3) Library Functions Manual sysdecode_enum(3)

sysdecode_enum, sysdecode_acltype, sysdecode_atfd, sysdecode_extattrnamespace, sysdecode_fadvice, sysdecode_fcntl_cmd, sysdecode_getfsstat_mode, sysdecode_getrusage_who, sysdecode_idtype, sysdecode_ipproto, sysdecode_kldsym_cmd, sysdecode_kldunload_flags, sysdecode_lio_listio_mode, sysdecode_madvice, sysdecode_minherit_flags, sysdecode_msgctl_cmd, sysdecode_nfssvc_flags, sysdecode_pathconf_name, sysdecode_prio_which, sysdecode_procctl_cmd, sysdecode_ptrace_request, sysdecode_rlimit, sysdecode_rtprio_function, sysdecode_scheduler_policy, sysdecode_sctp_pr_policy, sysdecode_sctp_sinfo_flags, sysdecode_semctl_cmd, sysdecode_shmctl_cmd, sysdecode_shutdown_how, sysdecode_sigbus_code, sysdecode_sigchld_code, sysdecode_sigfpe_code, sysdecode_sigill_code, sysdecode_signal, sysdecode_sigprocmask_how, sysdecode_sigsegv_code, sysdecode_sigtrap_code, sysdecode_sockaddr_family, sysdecode_socketdomain, sysdecode_sockettype, sysdecode_sockopt_level, sysdecode_sysarch_number, sysdecode_umtx_op, sysdecode_vmresult, sysdecode_whencelookup name of various enumerated values

library “libsysdecode”

#include <sys/types.h>
#include <stdbool.h>
#include <sysdecode.h>

const char *
sysdecode_acltype(int type);

const char *
sysdecode_atfd(int fd);

const char *
sysdecode_extattrnamespace(int namespace);

const char *
sysdecode_fadvice(int advice);

const char *
sysdecode_fcntl_cmd(int cmd);

const char *
sysdecode_getfsstat_mode(int mode);

const char *
sysdecode_getrusage_who(int who);

const char *
sysdecode_idtype(int idtype);

const char *
sysdecode_ipproto(int protocol);

const char *
sysdecode_kldsym_cmd(int cmd);

const char *
sysdecode_kldunload_flags(int flags);

const char *
sysdecode_lio_listio_mode(int mode);

const char *
sysdecode_madvice(int advice);

const char *
sysdecode_minherit_flags(int inherit);

const char *
sysdecode_msgctl_cmd(int cmd);

const char *
sysdecode_nfssvc_flags(int flags);

const char *
sysdecode_pathconf_name(int name);

const char *
sysdecode_prio_which(int which);

const char *
sysdecode_procctl_cmd(int cmd);

const char *
sysdecode_ptrace_request(int request);

const char *
sysdecode_rlimit(int resource);

const char *
sysdecode_rtprio_function(int function);

const char *
sysdecode_scheduler_policy(int policy);

const char *
sysdecode_sctp_pr_policy(int policy);

const char *
sysdecode_semctl_cmd(int cmd);

const char *
sysdecode_shmctl_cmd(int cmd);

const char *
sysdecode_shutdown_how(int how);

const char *
sysdecode_sigbus_code(int si_code);

const char *
sysdecode_sigchld_code(int si_code);

const char *
sysdecode_sigfpe_code(int si_code);

const char *
sysdecode_sigill_code(int si_code);

const char *
sysdecode_signal(int sig);

const char *
sysdecode_sigprocmask_how(int how);

const char *
sysdecode_sigsegv_code(int si_code);

const char *
sysdecode_sigtrap_code(int si_code);

const char *
sysdecode_sockaddr_family(int sa_family);

const char *
sysdecode_socketdomain(int domain);

const char *
sysdecode_sockettype(int type);

const char *
sysdecode_sockopt_level(int level);

const char *
sysdecode_sysarch_number(int number);

const char *
sysdecode_umtx_op(int op);

const char *
sysdecode_vmresult(int result);

const char *
sysdecode_whence(int whence);

The sysdecode_enum functions return a text description of an integer value. The text description matches the name of a C macro with the same value as the sole function argument. NULL is returned if there is no matching C macro name.

Most of these functions decode an argument passed to a system call:

() acl_get_file(3) type
() openat(2) fd
() extattr_get_fd(2) attrnamespace
() posix_fadvise(2) advice
() fcntl(2) cmd
() getfsstat(2) mode
() procctl(2), waitid(2) idtype
() kldsym(2) cmd
() kldunloadf(2) flags
() lio_listio(2) mode
() madvise(2) advice
() minherit(2) inherit
() msgctl(2) cmd
() nfssvc(2) flags
() pathconf(2) name
() getpriority(2) which
() procctl(2) cmd
() ptrace(2) request
() getrlimit(2) resource
() rtprio(2) function
() getrusage(2) who
() sched_setscheduler(2) policy
() semctl(2) cmd
() shmctl(2) cmd
() shutdown(2) how
() sigprocmask(2) how
() getsockopt(2) level
() sysarch(2) number
() _umtx_op(2) op
() lseek(2) whence

These functions decode signal-specific signal codes stored in the si_code field of the siginfo_t object associated with an instance of signal:

()
()
()
()
()
()

Other functions decode the values described below:

()
An IP protocol.
()
A PR-SCTP policy.
()
A process signal.
()
A socket address family.
()
A socket domain.
()
The return value of a function in the virtual memory subsystem of the kernel indicating the status of the associated request.

The sysdecode_enum functions return the name of a matching C macro or NULL if no matching C macro was found.

sysdecode(3), sysdecode_mask(3), sysdecode_sigcode(3)

January 14, 2018 FreeBSD-13.0