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teach logfc() to handle prefices, give it saner calling conventions

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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2019-12-20 22:10:36 -05:00
parent fbc2d1686d
commit 9f09f649ca
2 changed files with 27 additions and 52 deletions
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16
include/linux/fs_context.h
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@ -181,9 +181,13 @@ struct fc_log {
char *buffer[8];
};
extern __attribute__((format(printf, 2, 3)))
void logfc(struct fs_context *fc, const char *fmt, ...);
extern __attribute__((format(printf, 4, 5)))
void logfc(struct fc_log *log, const char *prefix, char level, const char *fmt, ...);
#define __logfc(fc, l, fmt, ...) ({ \
struct fs_context *__fc = (fc); \
logfc(__fc ? __fc->log : NULL, NULL, \
l, fmt, ## __VA_ARGS__);})
/**
* infof - Store supplementary informational message
* @fc: The context in which to log the informational message
@ -192,7 +196,7 @@ void logfc(struct fs_context *fc, const char *fmt, ...);
* Store the supplementary informational message for the process if the process
* has enabled the facility.
*/
#define infof(fc, fmt, ...) ({ logfc(fc, "i "fmt, ## __VA_ARGS__); })
#define infof(fc, fmt, ...) __logfc(fc, 'i', fmt, ## __VA_ARGS__)
/**
* warnf - Store supplementary warning message
@ -202,7 +206,7 @@ void logfc(struct fs_context *fc, const char *fmt, ...);
* Store the supplementary warning message for the process if the process has
* enabled the facility.
*/
#define warnf(fc, fmt, ...) ({ logfc(fc, "w "fmt, ## __VA_ARGS__); })
#define warnf(fc, fmt, ...) __logfc(fc, 'w', fmt, ## __VA_ARGS__)
/**
* errorf - Store supplementary error message
@ -212,7 +216,7 @@ void logfc(struct fs_context *fc, const char *fmt, ...);
* Store the supplementary error message for the process if the process has
* enabled the facility.
*/
#define errorf(fc, fmt, ...) ({ logfc(fc, "e "fmt, ## __VA_ARGS__); })
#define errorf(fc, fmt, ...) __logfc(fc, 'e', fmt, ## __VA_ARGS__)
/**
* invalf - Store supplementary invalid argument error message
@ -222,6 +226,6 @@ void logfc(struct fs_context *fc, const char *fmt, ...);
* Store the supplementary error message for the process if the process has
* enabled the facility and return -EINVAL.
*/
#define invalf(fc, fmt, ...) ({ errorf(fc, fmt, ## __VA_ARGS__); -EINVAL; })
#define invalf(fc, fmt, ...) (errorf(fc, fmt, ## __VA_ARGS__), -EINVAL)
#endif /* _LINUX_FS_CONTEXT_H */