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userspace/libc: implement sigaction(), sigemptyset(), signal() & strcspn()

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Signed-off-by: EnderIce2 <enderice2@protonmail.com>
This commit is contained in:
EnderIce2 2025-01-28 12:25:05 +02:00
parent 1b55332027
commit 833d8d497a
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GPG Key ID: 2EE20AF089811A5A
4 changed files with 78 additions and 8 deletions
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6
Userspace/libc/include/signal.h
View File

@ -197,14 +197,14 @@ extern "C"
int pthread_sigmask(int, const sigset_t *restrict, sigset_t *restrict);
int raise(int);
int sig2str(int, char *);
int sigaction(int, const struct sigaction *restrict, struct sigaction *restrict);
int sigaction(int sig, const struct sigaction *restrict act, struct sigaction *restrict oact);
int sigaddset(sigset_t *, int);
int sigaltstack(const stack_t *restrict, stack_t *restrict);
int sigdelset(sigset_t *, int);
int sigemptyset(sigset_t *);
int sigemptyset(sigset_t *set);
int sigfillset(sigset_t *);
int sigismember(const sigset_t *, int);
void (*signal(int, void (*)(int)))(int);
void (*signal(int sig, void (*func)(int)))(int);
int sigpending(sigset_t *);
int sigprocmask(int, const sigset_t *restrict, sigset_t *restrict);
int sigqueue(pid_t, int, union sigval);

2
Userspace/libc/include/string.h
View File

@ -41,7 +41,7 @@ extern "C"
int strcoll(const char *, const char *);
int strcoll_l(const char *, const char *, locale_t);
char *strcpy(char *restrict, const char *restrict);
size_t strcspn(const char *, const char *);
size_t strcspn(const char *s1, const char *s2);
char *strdup(const char *);
char *strerror(int);
char *strerror_l(int, locale_t);

59
Userspace/libc/src/std/signal.c
View File

@ -16,6 +16,8 @@
*/
#include <signal.h>
#include <errno.h>
#include <stdio.h>
export int kill(pid_t pid, int sig)
{
@ -29,14 +31,65 @@ export int pthread_kill(pthread_t, int);
export int pthread_sigmask(int, const sigset_t *restrict, sigset_t *restrict);
export int raise(int);
export int sig2str(int, char *);
export int sigaction(int, const struct sigaction *restrict, struct sigaction *restrict);
export int sigaction(int sig, const struct sigaction *restrict act, struct sigaction *restrict oact)
{
if (sig == SIGKILL || sig == SIGSTOP)
{
errno = EINVAL;
return -1;
}
if (oact != NULL)
{
printf("sigaction() is unimplemented\n");
// if (syscall3(SYS_RT_SIGACTION, sig, NULL, oact, sizeof(sigset_t)) < 0)
return -1;
}
if (act != NULL)
{
printf("sigaction() is unimplemented\n");
// if (syscall3(SYS_RT_SIGACTION, sig, act, NULL, sizeof(sigset_t)) < 0)
return -1;
}
return 0;
}
export int sigaddset(sigset_t *, int);
export int sigaltstack(const stack_t *restrict, stack_t *restrict);
export int sigdelset(sigset_t *, int);
export int sigemptyset(sigset_t *);
export int sigemptyset(sigset_t *set)
{
if (set == NULL)
{
errno = EINVAL;
return -1;
}
*set = 0;
return 0;
}
export int sigfillset(sigset_t *);
export int sigismember(const sigset_t *, int);
export void (*signal(int, void (*)(int)))(int);
export void (*signal(int sig, void (*func)(int)))(int)
{
struct sigaction act, oact;
act.sa_handler = func;
sigemptyset(&act.sa_mask);
act.sa_flags = 0;
if (sigaction(sig, &act, &oact) < 0)
return SIG_ERR;
return oact.sa_handler;
}
export int sigpending(sigset_t *);
export int sigprocmask(int, const sigset_t *restrict, sigset_t *restrict);
export int sigqueue(pid_t, int, union sigval);

19
Userspace/libc/src/std/string.c
View File

@ -75,7 +75,24 @@ export int strcmp(const char *s1, const char *s2)
export int strcoll(const char *, const char *);
export int strcoll_l(const char *, const char *, locale_t);
export char *strcpy(char *restrict, const char *restrict);
export size_t strcspn(const char *, const char *);
export size_t strcspn(const char *s1, const char *s2)
{
const char *p = s1;
const char *spanp;
char c, sc;
while ((c = *p++) != 0)
{
for (spanp = s2; (sc = *spanp++) != 0;)
{
if (sc == c)
return p - 1 - s1;
}
}
return p - 1 - s1;
}
export char *strdup(const char *);
export char *strerror(int);
export char *strerror_l(int, locale_t);