Kernel: Add klibc for kernel
Now building same source as libc is not needed and libc doesn't have to do hacks to allow kernel compilation
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b165340662
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198dde8365
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@ -141,9 +141,9 @@ set(BAN_SOURCES
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../BAN/BAN/Time.cpp
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)
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set(LIBC_SOURCES
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../libc/ctype.cpp
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../libc/string.cpp
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set(KLIBC_SOURCES
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klibc/ctype.cpp
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klibc/string.cpp
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)
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set(LIBELF_SOURCES
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@ -154,7 +154,7 @@ set(KERNEL_SOURCES
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${KERNEL_SOURCES}
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${LAI_SOURCES}
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${BAN_SOURCES}
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${LIBC_SOURCES}
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${KLIBC_SOURCES}
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${LIBELF_SOURCES}
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)
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@ -0,0 +1,80 @@
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#include <ctype.h>
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int isalnum(int c)
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{
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return isdigit(c) || isalpha(c);
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}
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int isalpha(int c)
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{
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return islower(c) || isupper(c);
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}
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int isascii(int c)
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{
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return c <= 0x7F;
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}
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int isblank(int c)
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{
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return c == ' ' || c == '\t';
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}
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int iscntrl(int c)
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{
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return c < 32 || c == 0x7F;
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}
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int isdigit(int c)
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{
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return '0' <= c && c <= '9';
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}
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int isgraph(int c)
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{
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return 0x21 <= c && c <= 0x7E;
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}
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int islower(int c)
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{
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return 'a' <= c && c <= 'z';
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}
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int isprint(int c)
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{
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return isgraph(c) || c == ' ';
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}
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int ispunct(int c)
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{
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return isgraph(c) && !isalnum(c);
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}
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int isspace(int c)
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{
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return c == ' ' || c == '\f' || c == '\n' || c == '\r' || c == '\t' || c == '\v';
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}
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int isupper(int c)
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{
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return 'A' <= c && c <= 'Z';
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}
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int isxdigit(int c)
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{
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return isdigit(c) || ('a' <= c && c <= 'f') || ('A' <= c && c <= 'F');
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}
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int toupper(int c)
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{
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if (!islower(c))
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return c;
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return 'A' + (c - 'a');
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}
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int tolower(int c)
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{
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if (!isupper(c))
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return c;
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return 'a' + (c - 'A');
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}
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@ -0,0 +1,166 @@
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#include <errno.h>
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#include <string.h>
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int memcmp(const void* s1, const void* s2, size_t n)
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{
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auto* u1 = static_cast<const unsigned char*>(s1);
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auto* u2 = static_cast<const unsigned char*>(s2);
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for (size_t i = 0; i < n; i++)
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if (u1[i] != u2[i])
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return u1[i] - u2[i];
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return 0;
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}
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void* memcpy(void* __restrict s1, const void* __restrict s2, size_t n)
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{
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auto* dst = static_cast<unsigned char*>(s1);
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auto* src = static_cast<const unsigned char*>(s2);
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for (size_t i = 0; i < n; i++)
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dst[i] = src[i];
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return s1;
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}
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void* memmove(void* s1, const void* s2, size_t n)
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{
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auto* dst = static_cast<unsigned char*>(s1);
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auto* src = static_cast<const unsigned char*>(s2);
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if (dst < src)
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{
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for (size_t i = 0; i < n; i++)
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dst[i] = src[i];
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}
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else
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{
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for (size_t i = 1; i <= n; i++)
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dst[n - i] = src[n - i];
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}
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return s1;
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}
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void* memset(void* s, int c, size_t n)
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{
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auto* u = static_cast<unsigned char*>(s);
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for (size_t i = 0; i < n; i++)
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u[i] = c;
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return s;
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}
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size_t strlen(const char* str)
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{
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size_t len = 0;
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while (str[len])
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len++;
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return len;
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}
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char* strcpy(char* __restrict dst, const char* __restrict src)
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{
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size_t i = 0;
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for (; src[i]; i++)
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dst[i] = src[i];
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dst[i] = '\0';
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return dst;
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}
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char* strncpy(char* __restrict dst, const char* __restrict src, size_t len)
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{
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size_t i = 0;
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for (; i < len && src[i]; i++)
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dst[i] = src[i];
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if (i < len)
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dst[i] = '\0';
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return dst;
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}
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const char* strerrordesc_np(int error)
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{
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switch (error)
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{
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case 0: return "Success";
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case E2BIG: return "Argument list too long.";
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case EACCES: return "Permission denied.";
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case EADDRINUSE: return "Address in use.";
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case EADDRNOTAVAIL: return "Address not available.";
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case EAFNOSUPPORT: return "Address family not supported.";
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case EAGAIN: return "Resource unavailable, try again.";
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case EALREADY: return "Connection already in progress.";
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case EBADF: return "Bad file descriptor.";
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case EBADMSG: return "Bad message.";
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case EBUSY: return "Device or resource busy.";
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case ECANCELED: return "Operation canceled.";
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case ECHILD: return "No child processes.";
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case ECONNABORTED: return "Connection aborted.";
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case ECONNREFUSED: return "Connection refused.";
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case ECONNRESET: return "Connection reset.";
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case EDEADLK: return "Resource deadlock would occur.";
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case EDESTADDRREQ: return "Destination address required.";
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case EDOM: return "Mathematics argument out of domain of function.";
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case EDQUOT: return "Reserved.";
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case EEXIST: return "File exists.";
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case EFAULT: return "Bad address.";
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case EFBIG: return "File too large.";
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case EHOSTUNREACH: return "Host is unreachable.";
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case EIDRM: return "Identifier removed.";
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case EILSEQ: return "Illegal byte sequence.";
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case EINPROGRESS: return "Operation in progress.";
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case EINTR: return "Interrupted function.";
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case EINVAL: return "Invalid argument.";
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case EIO: return "I/O error.";
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case EISCONN: return "Socket is connected.";
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case EISDIR: return "Is a directory.";
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case ELOOP: return "Too many levels of symbolic links.";
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case EMFILE: return "File descriptor value too large.";
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case EMLINK: return "Too many links.";
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case EMSGSIZE: return "Message too large.";
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case EMULTIHOP: return "Reserved.";
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case ENAMETOOLONG: return "Filename too long.";
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case ENETDOWN: return "Network is down.";
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case ENETRESET: return "Connection aborted by network.";
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case ENETUNREACH: return "Network unreachable.";
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case ENFILE: return "Too many files open in system.";
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case ENOBUFS: return "No buffer space available.";
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case ENODATA: return "No message is available on the STREAM head read queue.";
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case ENODEV: return "No such device.";
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case ENOENT: return "No such file or directory.";
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case ENOEXEC: return "Executable file format error.";
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case ENOLCK: return "No locks available.";
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case ENOLINK: return "Reserved.";
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case ENOMEM: return "Not enough space.";
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case ENOMSG: return "No message of the desired type.";
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case ENOPROTOOPT: return "Protocol not available.";
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case ENOSPC: return "No space left on device.";
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case ENOSR: return "No STREAM resources.";
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case ENOSTR: return "Not a STREAM.";
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case ENOSYS: return "Functionality not supported.";
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case ENOTCONN: return "The socket is not connected.";
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case ENOTDIR: return "Not a directory or a symbolic link to a directory.";
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case ENOTEMPTY: return "Directory not empty.";
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case ENOTRECOVERABLE: return "State not recoverable.";
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case ENOTSOCK: return "Not a socket.";
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case ENOTSUP: return "Not supported.";
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case ENOTTY: return "Inappropriate I/O control operation.";
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case ENXIO: return "No such device or address.";
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case EOPNOTSUPP: return "Operation not supported on socket .";
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case EOVERFLOW: return "Value too large to be stored in data type.";
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case EOWNERDEAD: return "Previous owner died.";
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case EPERM: return "Operation not permitted.";
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case EPIPE: return "Broken pipe.";
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case EPROTO: return "Protocol error.";
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case EPROTONOSUPPORT: return "Protocol not supported.";
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case EPROTOTYPE: return "Protocol wrong type for socket.";
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case ERANGE: return "Result too large.";
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case EROFS: return "Read-only file system.";
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case ESPIPE: return "Invalid seek.";
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case ESRCH: return "No such process.";
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case ESTALE: return "Reserved.";
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case ETIME: return "Stream ioctl() timeout.";
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case ETIMEDOUT: return "Connection timed out.";
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case ETXTBSY: return "Text file busy.";
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case EWOULDBLOCK: return "Operation would block.";
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case EXDEV: return "Cross-device link.";
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case EEXISTS: return "File exists";
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case ENOTBLK: return "Block device required";
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case EUNKNOWN: return "Unknown error";
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}
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return nullptr;
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}
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@ -136,7 +136,6 @@ char* strncat(char* __restrict__ dest, const char* __restrict__ src, size_t n)
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return dest;
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}
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#ifndef __is_kernel
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char* strdup(const char* str)
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{
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const size_t size = strlen(str) + 1;
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@ -162,9 +161,7 @@ char* strndup(const char* str, size_t size)
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memcpy(new_str, str, size);
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return new_str;
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}
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#endif
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__attribute__((optimize("-O0")))
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size_t strlen(const char* str)
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{
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size_t len = 0;
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