/[osn-commons]/trunk/plibc/lib/string.c
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revision 50 by rakinar2, Thu Aug 15 18:10:51 2024 UTC revision 51 by rakinar2, Fri Aug 16 18:34:43 2024 UTC
# Line 1  Line 1 
1  #include "string.h"  #include "string.h"
2    #include "errno.h"
3    
4  size_t  size_t
5  strlen (const char *str)  strlen (const char *str)
# Line 9  strlen (const char *str) Line 10  strlen (const char *str)
10          len++;          len++;
11    
12      return len;      return len;
13    }
14    
15    static const char *errno_lut[] = {
16        [0] = "Success",
17        [EPERM] = "Operation not permitted",
18        [ENOENT] = "No such file or directory",
19        [ESRCH] = "No such process",
20        [EINTR] = "Interrupted system call",
21        [EIO] = "I/O error",
22        [ENXIO] = "No such device or address",
23        [E2BIG] = "Argument list too long",
24        [ENOEXEC] = "Exec format error",
25        [EBADF] = "Bad file number",
26        [ECHILD] = "No child processes",
27        [EAGAIN] = "Try again",
28        [ENOMEM] = "Out of memory",
29        [EACCES] = "Permission denied",
30        [EFAULT] = "Bad address",
31        [ENOTBLK] = "Block device required",
32        [EBUSY] = "Device or resource busy",
33        [EEXIST] = "File exists",
34        [EXDEV] = "Cross-device link",
35        [ENODEV] = "No such device",
36        [ENOTDIR] = "Not a directory",
37        [EISDIR] = "Is a directory",
38        [EINVAL] = "Invalid argument",
39        [ENFILE] = "File table overflow",
40        [EMFILE] = "Too many open files",
41        [ENOTTY] = "Not a typewriter",
42        [ETXTBSY] = "Text file busy",
43        [EFBIG] = "File too large",
44        [ENOSPC] = "No space left on device",
45        [ESPIPE] = "Illegal seek",
46        [EROFS] = "Read-only file system",
47        [EMLINK] = "Too many links",
48        [EPIPE] = "Broken pipe",
49        [EDOM] = "Math argument out of domain of func",
50        [ERANGE] = "Math result not representable",
51        [EDEADLK] = "Resource deadlock would occur",
52        [ENAMETOOLONG] = "File name too long",
53        [ENOLCK] = "No record locks available",
54        [ENOSYS] = "Function not implemented",
55        [ENOTEMPTY] = "Directory not empty",
56        [ELOOP] = "Too many symbolic links encountered",
57        [ENOMSG] = "No message of desired type",
58        [EIDRM] = "Identifier removed",
59        [ECHRNG] = "Channel number out of range",
60        [EL2NSYNC] = "Level 2 not synchronized",
61        [EL3HLT] = "Level 3 halted",
62        [EL3RST] = "Level 3 reset",
63        [ELNRNG] = "Link number out of range",
64        [EUNATCH] = "Protocol driver not attached",
65        [ENOCSI] = "No CSI structure available",
66        [EL2HLT] = "Level 2 halted",
67        [EBADE] = "Invalid exchange",
68        [EBADR] = "Invalid request descriptor",
69        [EXFULL] = "Exchange full",
70        [ENOANO] = "No anode",
71        [EBADRQC] = "Invalid request code",
72        [EBADSLT] = "Invalid slot",
73        [EBFONT] = "Bad font file format",
74    };
75    
76    const char *
77    strerror (int errnum)
78    {
79        if (errnum < 0
80            || (size_t) (errnum) >= sizeof (errno_lut) / sizeof (errno_lut[0]))
81            return "Unknown error";
82    
83        return errno_lut[errnum];
84    }
85    
86    void *
87    memcpy (void *dest, const void *src, size_t n)
88    {
89        for (size_t i = 0; i < n; i++)
90            ((char *) dest)[i] = ((const char *) src)[i];
91    
92        return dest;
93  }  }
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