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Introduce sigtimedwait() and sigwaitinfo()

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This change also invents sigcountset() and strsignal_r() and improves
the quality of siginfo_t handling.
This commit is contained in:
Justine Tunney 2022-10-10 07:36:07 -07:00
parent 7ae556463a
commit 467a332e38
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GPG key ID: BE714B4575D6E328
41 changed files with 887 additions and 345 deletions
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41
libc/intrin/describestat.c
View file

@ -22,67 +22,64 @@
#include "libc/intrin/asan.internal.h"
#include "libc/intrin/kprintf.h"
const char *(DescribeStat)(char buf[300], int rc, const struct stat *st) {
int i, n;
#define N 300
#define append(...) i += ksnprintf(buf + i, N - i, __VA_ARGS__)
const char *(DescribeStat)(char buf[N], int rc, const struct stat *st) {
int i = 0;
if (rc == -1) return "n/a";
if (!st) return "NULL";
if ((!IsAsan() && kisdangerous(st)) ||
(IsAsan() && !__asan_is_valid(st, sizeof(*st)))) {
ksnprintf(buf, 300, "%p", st);
ksnprintf(buf, N, "%p", st);
return buf;
}
i = 0;
n = 300;
i += ksnprintf(buf + i, n - i, "{.st_%s=%'ld", "size", st->st_size);
append("{.st_%s=%'ld", "size", st->st_size);
if (st->st_blocks) {
i +=
ksnprintf(buf + i, n - i, ", .st_blocks=%'lu/512", st->st_blocks * 512);
append(", .st_blocks=%'lu/512", st->st_blocks * 512);
}
if (st->st_mode) {
i += ksnprintf(buf + i, n - i, ", .st_%s=%#o", "mode", st->st_mode);
append(", .st_%s=%#o", "mode", st->st_mode);
}
if (st->st_nlink != 1) {
i += ksnprintf(buf + i, n - i, ", .st_%s=%'lu", "nlink", st->st_nlink);
append(", .st_%s=%'lu", "nlink", st->st_nlink);
}
if (st->st_uid) {
i += ksnprintf(buf + i, n - i, ", .st_%s=%lu", "uid", st->st_uid);
append(", .st_%s=%lu", "uid", st->st_uid);
}
if (st->st_gid) {
i += ksnprintf(buf + i, n - i, ", .st_%s=%lu", "gid", st->st_gid);
append(", .st_%s=%lu", "gid", st->st_gid);
}
if (st->st_ino) {
i += ksnprintf(buf + i, n - i, ", .st_%s=%lu", "ino", st->st_ino);
append(", .st_%s=%lu", "ino", st->st_ino);
}
if (st->st_gen) {
i += ksnprintf(buf + i, n - i, ", .st_%s=%'lu", "gen", st->st_gen);
append(", .st_%s=%'lu", "gen", st->st_gen);
}
if (st->st_flags) {
i += ksnprintf(buf + i, n - i, ", .st_%s=%lx", "flags", st->st_flags);
append(", .st_%s=%lx", "flags", st->st_flags);
}
if (st->st_rdev) {
i += ksnprintf(buf + i, n - i, ", .st_%s=%'lu", "rdev", st->st_rdev);
append(", .st_%s=%'lu", "rdev", st->st_rdev);
}
if (st->st_blksize != PAGESIZE) {
i += ksnprintf(buf + i, n - i, ", .st_%s=%'lu", "blksize", st->st_blksize);
append(", .st_%s=%'lu", "blksize", st->st_blksize);
}
if (n - i >= 2) {
buf[i + 0] = '}';
buf[i + 1] = 0;
}
append("}");
return buf;
}