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symlink_exists: wrap exceptions into nix exception

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(cherry picked from commit 779687854f)
This commit is contained in:
Jörg Thalheim 2025-04-02 21:22:43 +02:00 • committed by Jörg Thalheim
parent c972cbd2bb
commit d73ed6f310
2 changed files with 13 additions and 4 deletions
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12
src/libutil/file-system.cc
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@ -31,7 +31,17 @@
namespace nix { namespace nix {
namespace fs { using namespace std::filesystem; } namespace fs {
using namespace std::filesystem;
bool symlink_exists(const std::filesystem::path & path) {
try {
return std::filesystem::exists(std::filesystem::symlink_status(path));
} catch (const std::filesystem::filesystem_error & e) {
throw SysError("cannot check existence of %1%", path);
}
}
}
bool isAbsolute(PathView path) bool isAbsolute(PathView path)
{ {

5
src/libutil/include/nix/util/file-system.hh
View file

@ -134,6 +134,7 @@ bool pathExists(const Path & path);
namespace fs { namespace fs {
/** /**
* TODO: we may actually want to use pathExists instead of this function
* ``` * ```
* symlink_exists(p) = std::filesystem::exists(std::filesystem::symlink_status(p)) * symlink_exists(p) = std::filesystem::exists(std::filesystem::symlink_status(p))
* ``` * ```
@ -142,9 +143,7 @@ namespace fs {
* std::filesystem::exists(p) = std::filesystem::exists(std::filesystem::status(p)) * std::filesystem::exists(p) = std::filesystem::exists(std::filesystem::status(p))
* ``` * ```
*/ */
inline bool symlink_exists(const std::filesystem::path & path) { bool symlink_exists(const std::filesystem::path & path);
return std::filesystem::exists(std::filesystem::symlink_status(path));
}
} // namespace fs } // namespace fs