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50 lines (45 loc) · 1.04 KB
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//! @file getfileowner.cpp
//! @author Andrew Schwartzmeyer <andschwa@microsoft.com>
//! @brief returns the owner of a file
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <pwd.h>
#include <string.h>
#include <unistd.h>
#include "getstat.h"
#include "getpwuid.h"
#include "getfileowner.h"
//! @brief GetFileOwner returns the owner of a file
//!
//! GetFileOwner
//!
//! @param[in] fileName
//! @parblock
//! A pointer to the buffer that contains the file name
//!
//! char* is marshaled as an LPStr, which on Linux is UTF-8.
//! @endparblock
//!
//! @exception errno Passes this error via errno to GetLastError:
//! - ERROR_INVALID_PARAMETER: parameter is not valid
//!
//! @retval file owner, or NULL if unsuccessful
//!
char* GetFileOwner(const char* fileName)
{
int32_t ret = 0;
errno = 0;
if (!fileName)
{
errno = ERROR_INVALID_PARAMETER;
return NULL;
}
struct stat buf;
ret = GetStat(fileName, &buf);
if (ret != 0)
{
return NULL;
}
return GetPwUid(buf.st_uid);
}