diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 12:06:34 +0000 |
---|---|---|
committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 12:06:34 +0000 |
commit | 5e61585d76ae77fd5e9e96ebabb57afa4d74880d (patch) | |
tree | 2b467823aaeebc7ef8bc9e3cabe8074eaef1666d /src/util/warn_stat.c | |
parent | Initial commit. (diff) | |
download | postfix-5b7b6342ca8708be5ee306c089f8c5b3d3d122d8.tar.xz postfix-5b7b6342ca8708be5ee306c089f8c5b3d3d122d8.zip |
Adding upstream version 3.5.24.upstream/3.5.24upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | src/util/warn_stat.c | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/src/util/warn_stat.c b/src/util/warn_stat.c new file mode 100644 index 0000000..fd885d9 --- /dev/null +++ b/src/util/warn_stat.c @@ -0,0 +1,101 @@ +/*++ +/* 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); +} |