Add bool IsFile(char*) to libpsl-native
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5 changed files with 82 additions and 0 deletions
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@ -8,6 +8,7 @@ add_library(psl-native SHARED
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getcomputername.cpp
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getcomputername.cpp
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getlinkcount.cpp
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getlinkcount.cpp
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getfullyqualifiedname.cpp
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getfullyqualifiedname.cpp
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isfile.cpp
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isdirectory.cpp
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isdirectory.cpp
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issymlink.cpp
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issymlink.cpp
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isexecutable.cpp
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isexecutable.cpp
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40
src/libpsl-native/src/isfile.cpp
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src/libpsl-native/src/isfile.cpp
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//! @file isfile.cpp
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//! @author Andrew Schwartzmeyer <andschwa@microsoft.com>
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//! @brief returns if the path exists
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#include <errno.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <pwd.h>
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#include <string.h>
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#include <unistd.h>
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#include "isfile.h"
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//! @brief returns if the path is a file or directory
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//!
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//! IsFile
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//!
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//! @param[in] path
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//! @parblock
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//! A pointer to the buffer that contains the file name
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//!
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//! char* is marshaled as an LPStr, which on Linux is UTF-8.
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//! @endparblock
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//!
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//! @exception errno Passes this error via errno to GetLastError:
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//! - ERROR_INVALID_PARAMETER: parameter is not valid
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//!
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//! @retval true if path exists, false otherwise
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//!
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bool IsFile(const char* path)
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{
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errno = 0;
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if (!path)
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{
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errno = ERROR_INVALID_PARAMETER;
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return false;
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}
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return access(path, F_OK) != -1;
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}
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10
src/libpsl-native/src/isfile.h
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src/libpsl-native/src/isfile.h
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#pragma once
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#include "pal.h"
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#include <stdbool.h>
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PAL_BEGIN_EXTERNC
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bool IsFile(const char* path);
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PAL_END_EXTERNC
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@ -10,6 +10,7 @@ add_executable(psl-native-test
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test-getlinkcount.cpp
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test-getlinkcount.cpp
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test-getfullyqualifiedname.cpp
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test-getfullyqualifiedname.cpp
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test-isdirectory.cpp
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test-isdirectory.cpp
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test-isfile.cpp
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test-issymlink.cpp
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test-issymlink.cpp
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test-isexecutable.cpp
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test-isexecutable.cpp
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test-createsymlink.cpp
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test-createsymlink.cpp
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30
src/libpsl-native/test/test-isfile.cpp
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src/libpsl-native/test/test-isfile.cpp
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//! @file test-isfile.cpp
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//! @author Andrew Schwartzmeyer <andschwa@microsoft.com>
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//! @brief Tests Isfile
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#include <gtest/gtest.h>
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#include <errno.h>
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#include <unistd.h>
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#include "isfile.h"
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TEST(IsFileTest, RootIsFile)
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{
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EXPECT_TRUE(IsFile("/"));
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}
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TEST(IsFileTest, BinLsIsFile)
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{
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EXPECT_TRUE(IsFile("/bin/ls"));
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}
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TEST(IsFileTest, CannotGetOwnerOfFakeFile)
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{
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EXPECT_FALSE(IsFile("SomeMadeUpFileNameThatDoesNotExist"));
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EXPECT_EQ(errno, ERROR_FILE_NOT_FOUND);
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}
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TEST(IsFileTest, ReturnsFalseForNullInput)
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{
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EXPECT_FALSE(IsFile(NULL));
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EXPECT_EQ(errno, ERROR_INVALID_PARAMETER);
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}
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