SBREAD (3) | C library functions | Unix Manual Pages



SBREAD (3) \| C library functions \| Unix Manual Pages \| :man▋ NAME sbread, sbwrite - read and write superblocks of a UFS file system CONTENTS Library Synopsis Description Return Values Errors See Also History Authors LIBRARY .Lb libufs SYNOPSIS .In sys/param.h .In sys/mount.h .In ufs/ufs/ufsmount.h .In ufs/ufs/dinode.h .In ufs/ffs/fs.h .In libufs.h int `sbread "struct uufsd disk"` int* `sbwrite "struct uufsd disk" "int all"` DESCRIPTION The `sbread` and `sbwrite` functions provide superblock reads and writes for libufs(3) consumers. The `sbread` and `sbwrite` functions operate on the superblock field, d_sb, associated with a given userland UFS disk structure. Additionally, the `sbwrite` function will write to all superblock locations if the all* value is non-zero. RETURN VALUES .Rv -std sbread sbwrite ERRORS The function `sbread` may fail and set errno for any of the errors specified for the library function bread(3). Additionally, it may follow the libufs(3) error methodologies in situations where no usable superblock could be found. The function `sbwrite` may fail and set errno for any of the errors specified for the library function bwrite(3). SEE ALSO bread(3), bwrite(3), libufs(3) HISTORY libufs(3) AUTHORS

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