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resolvepath(2) System Calls resolvepath(2)
resolvepath - resolve all symbolic links of a path name
int resolvepath(const char *path, char *buf, size_t bufsiz);
The resolvepath() function fully resolves all symbolic links in the path name path into a
resulting path name free of symbolic links and places the resulting path name in the buf-
fer buf which has size bufsiz. The resulting path name names the same file or directory as
the original path name. All ``.'' components are eliminated and every non-leading ``..''
component is eliminated together with its preceding directory component. If leading ``..''
components reach to the root directory, they are replaced by ``/''. If the number of bytes
in the resulting path name is less than bufsiz, the contents of the remainder of buf are
Upon successful completion, resolvepath() returns the count of bytes placed in the buffer.
Otherwise, it returns -1, leaves the buffer unchanged, and sets errno to indicate the
The resolvepath() function will fail if:
EACCES Search permission is denied for a component of the path prefix of path or
for a path prefix component resulting from the resolution of a symbolic
EFAULT The path or buf argument points to an illegal address.
EIO An I/O error occurred while reading from the file system.
ENOENT The path argument is an empty string or a component of path or a path name
component produced by resolving a symbolic link does not name an existing
ELOOP Too many symbolic links were encountered in resolving path.
ENAMETOOLONG The length of path exceeds PATH_MAX, or a path name component is longer
than NAME_MAX. Path name resolution of a symbolic link produced an inter-
mediate result whose length exceeds PATH_MAX or a component whose length
ENOTDIR A component of the path prefix of path or of a path prefix component
resulting from the resolution of a symbolic link is not a directory.
No more than PATH_MAX bytes will be placed in the buffer. Applications should not assume
that the returned contents of the buffer are null-terminated.
SunOS 5.11 12 May 1997 resolvepath(2)
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