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Relax strict checking of log file.

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Add a strict_check parameter to create_file_safely() and disable the
strict file type checking when opening the log file. This allows the log
file to be a device file, fifo, etc.
This commit is contained in:
Bob Showalter 2017-06-02 17:50:49 +00:00
parent cb6f868739
commit 14523bb1f1
3 changed files with 36 additions and 32 deletions
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2
src/log.c
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@ -70,7 +70,7 @@ static unsigned int logging_initialized = FALSE; /* boolean */
*/ */
int open_log_file (const char *log_file_name) int open_log_file (const char *log_file_name)
{ {
log_file_fd = create_file_safely (log_file_name, FALSE); log_file_fd = create_file_safely (log_file_name, FALSE, FALSE);
return log_file_fd; return log_file_fd;
} }

7
src/utils.c
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@ -61,7 +61,8 @@ send_http_message (struct conn_s *connptr, int http_code,
/* /*
* Safely creates filename and returns the low-level file descriptor. * Safely creates filename and returns the low-level file descriptor.
*/ */
int create_file_safely (const char *filename, unsigned int truncate_file) int create_file_safely (const char *filename, unsigned int truncate_file,
unsigned int strict_check)
{ {
struct stat lstatinfo; struct stat lstatinfo;
int fildes; int fildes;
@ -112,6 +113,7 @@ int create_file_safely (const char *filename, unsigned int truncate_file)
return fildes; return fildes;
} }
if (strict_check) {
/* /*
* fstat() the opened file and check that the file mode bits, * fstat() the opened file and check that the file mode bits,
* inode, and device match. * inode, and device match.
@ -142,6 +144,7 @@ int create_file_safely (const char *filename, unsigned int truncate_file)
close (fildes); close (fildes);
return -EMLINK; return -EMLINK;
} }
}
/* /*
* Just return the file descriptor if we _don't_ want the file * Just return the file descriptor if we _don't_ want the file
@ -194,7 +197,7 @@ pidfile_create (const char *filename)
/* /*
* Create a new file * Create a new file
*/ */
if ((fildes = create_file_safely (filename, TRUE)) < 0) if ((fildes = create_file_safely (filename, TRUE, TRUE)) < 0)
return fildes; return fildes;
/* /*

3
src/utils.h
View File

@ -32,6 +32,7 @@ extern int send_http_message (struct conn_s *connptr, int http_code,
extern int pidfile_create (const char *path); extern int pidfile_create (const char *path);
extern int create_file_safely (const char *filename, extern int create_file_safely (const char *filename,
unsigned int truncate_file); unsigned int truncate_file,
unsigned int strict_check);
#endif #endif