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further tweak FileDescription comments

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This commit is contained in:
Ralf Jung 2024-09-22 16:22:57 +02:00
parent d29be1f90a
commit fb1193078d
1 changed files with 12 additions and 17 deletions
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29
src/tools/miri/src/shims/unix/fd.rs
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@ -25,10 +25,9 @@ pub(crate) enum FlockOp {
pub trait FileDescription: std::fmt::Debug + Any {
fn name(&self) -> &'static str;
/// Reads as much as possible into the given buffer, and returns the number of bytes read.
/// `ptr` is the pointer to the user supplied read buffer.
/// `len` indicates how many bytes the user requested.
/// `dest` is where the return value should be stored.
/// Reads as much as possible into the given buffer `ptr`.
/// `len` indicates how many bytes we should try to read.
/// `dest` is where the return value should be stored: number of bytes read, or `-1` in case of error.
fn read<'tcx>(
&self,
_self_ref: &FileDescriptionRef,
@ -41,10 +40,9 @@ pub trait FileDescription: std::fmt::Debug + Any {
throw_unsup_format!("cannot read from {}", self.name());
}
/// Writes as much as possible from the given buffer, and returns the number of bytes written.
/// `ptr` is the pointer to the user supplied read buffer.
/// `len` indicates how many bytes the user requested.
/// `dest` is where the return value should be stored.
/// Writes as much as possible from the given buffer `ptr`.
/// `len` indicates how many bytes we should try to write.
/// `dest` is where the return value should be stored: number of bytes written, or `-1` in case of error.
fn write<'tcx>(
&self,
_self_ref: &FileDescriptionRef,
@ -57,11 +55,9 @@ pub trait FileDescription: std::fmt::Debug + Any {
throw_unsup_format!("cannot write to {}", self.name());
}
/// Reads as much as possible into the given buffer from a given offset,
/// and returns the number of bytes read.
/// `ptr` is the pointer to the user supplied read buffer.
/// `len` indicates how many bytes the user requested.
/// `dest` is where the return value should be stored.
/// Reads as much as possible into the given buffer `ptr` from a given offset.
/// `len` indicates how many bytes we should try to read.
/// `dest` is where the return value should be stored: number of bytes read, or `-1` in case of error.
fn pread<'tcx>(
&self,
_communicate_allowed: bool,
@ -74,11 +70,10 @@ pub trait FileDescription: std::fmt::Debug + Any {
throw_unsup_format!("cannot pread from {}", self.name());
}
/// Writes as much as possible from the given buffer starting at a given offset,
/// and returns the number of bytes written.
/// Writes as much as possible from the given buffer `ptr` starting at a given offset.
/// `ptr` is the pointer to the user supplied read buffer.
/// `len` indicates how many bytes the user requested.
/// `dest` is where the return value should be stored.
/// `len` indicates how many bytes we should try to write.
/// `dest` is where the return value should be stored: number of bytes written, or `-1` in case of error.
fn pwrite<'tcx>(
&self,
_communicate_allowed: bool,