1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
|
/*++
/* NAME
/* warn_stat 3
/* SUMMARY
/* baby-sit stat() error returns
/* SYNOPSIS
/* #include <warn_stat.h>
/*
/* int warn_stat(path, st)
/* const char *path;
/* struct stat *st;
/*
/* int warn_lstat(path, st)
/* const char *path;
/* struct stat *st;
/*
/* int warn_fstat(fd, st)
/* int fd;
/* struct stat *st;
/* DESCRIPTION
/* warn_stat(), warn_fstat() and warn_lstat() wrap the stat(),
/* fstat() and lstat() system calls with code that logs a
/* diagnosis for common error cases.
/* LICENSE
/* .ad
/* .fi
/* The Secure Mailer license must be distributed with this software.
/* AUTHOR(S)
/* Wietse Venema
/* IBM T.J. Watson Research
/* P.O. Box 704
/* Yorktown Heights, NY 10598, USA
/*--*/
/* System library. */
#include <sys_defs.h>
#include <sys/stat.h>
#include <errno.h>
/* Utility library. */
#include <msg.h>
#define WARN_STAT_INTERNAL
#include <warn_stat.h>
/* diagnose_stat - log stat warning */
static void diagnose_stat(void)
{
struct stat st;
/*
* When *stat() fails with EOVERFLOW, and the interface uses 32-bit data
* types, suggest that the program be recompiled with larger data types.
*/
#ifdef EOVERFLOW
if (errno == EOVERFLOW && sizeof(st.st_size) == 4) {
msg_warn("this program was built for 32-bit file handles, "
"but some number does not fit in 32 bits");
msg_warn("possible solution: recompile in 64-bit mode, or "
"recompile in 32-bit mode with 'large file' support");
}
#endif
}
/* warn_stat - stat with warning */
int warn_stat(const char *path, struct stat * st)
{
int ret;
ret = stat(path, st);
if (ret < 0)
diagnose_stat();
return (ret);
}
/* warn_lstat - lstat with warning */
int warn_lstat(const char *path, struct stat * st)
{
int ret;
ret = lstat(path, st);
if (ret < 0)
diagnose_stat();
return (ret);
}
/* warn_fstat - fstat with warning */
int warn_fstat(int fd, struct stat * st)
{
int ret;
ret = fstat(fd, st);
if (ret < 0)
diagnose_stat();
return (ret);
}
|
