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os_open: impl mch_open with libuv. ref #133

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- use return value instead of open_req.result
- libuv uv_fs_open() returns `-errno` instead of always -1
- libuv always sets open_req.result to the return value, _except_ for OOM
  where it only sets the return value. So always use the return value.
- replace calls to mch_open macro.
- update call sites expecting -1 error
This commit is contained in:
Justin M. Keyes 2014-06-14 13:15:07 -04:00
parent bf6b0e3c0a
commit 180c84ed37
8 changed files with 53 additions and 37 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
src/nvim/eval.c
View File

@ -8317,7 +8317,7 @@ static void f_filereadable(typval_T *argvars, typval_T *rettv)
# define O_NONBLOCK 0
#endif
p = get_tv_string(&argvars[0]);
if (*p && !os_isdir(p) && (fd = mch_open((char *)p,
if (*p && !os_isdir(p) && (fd = os_open((char *)p,
O_RDONLY | O_NONBLOCK, 0)) >= 0) {
n = TRUE;
close(fd);

6
src/nvim/ex_cmds.c
View File

@ -1575,19 +1575,19 @@ void write_viminfo(char_u *file, int forceit)
if (tempname != NULL) {
int fd;
/* Use mch_open() to be able to use O_NOFOLLOW and set file
/* Use os_open() to be able to use O_NOFOLLOW and set file
* protection:
* Unix: same as original file, but strip s-bit. Reset umask to
* avoid it getting in the way.
* Others: r&w for user only. */
# ifdef UNIX
umask_save = umask(0);
fd = mch_open((char *)tempname,
fd = os_open((char *)tempname,
O_CREAT|O_EXCL|O_WRONLY|O_NOFOLLOW,
(int)((old_info.stat.st_mode & 0777) | 0600));
(void)umask(umask_save);
# else
fd = mch_open((char *)tempname,
fd = os_open((char *)tempname,
O_CREAT|O_EXCL|O_WRONLY|O_NOFOLLOW, 0600);
# endif
if (fd < 0)

4
src/nvim/ex_cmds2.c
View File

@ -2372,9 +2372,9 @@ int source_level(void *cookie)
*/
static FILE *fopen_noinh_readbin(char *filename)
{
int fd_tmp = mch_open(filename, O_RDONLY, 0);
int fd_tmp = os_open(filename, O_RDONLY, 0);
if (fd_tmp == -1)
if (fd_tmp < 0)
return NULL;
# ifdef HAVE_FD_CLOEXEC

40
src/nvim/fileio.c
View File

@ -428,7 +428,7 @@ readfile (
#ifdef UNIX
/*
* On Unix it is possible to read a directory, so we have to
* check for it before the mch_open().
* check for it before os_open().
*/
perm = os_getperm(fname);
if (perm >= 0 && !S_ISREG(perm) /* not a regular file ... */
@ -507,13 +507,13 @@ readfile (
if (!read_buffer && !read_stdin) {
if (!newfile || readonlymode) {
file_readonly = TRUE;
} else if ((fd = mch_open((char *)fname, O_RDWR, 0)) < 0) {
} else if ((fd = os_open((char *)fname, O_RDWR, 0)) < 0) {
// opening in readwrite mode failed => file is readonly
file_readonly = TRUE;
}
if (file_readonly == TRUE) {
// try to open readonly
fd = mch_open((char *)fname, O_RDONLY, 0);
fd = os_open((char *)fname, O_RDONLY, 0);
}
}
@ -696,9 +696,7 @@ readfile (
if (!read_stdin && (curbuf != old_curbuf
|| (using_b_ffname && (old_b_ffname != curbuf->b_ffname))
|| (using_b_fname && (old_b_fname != curbuf->b_fname))
|| (fd =
mch_open((char *)fname, O_RDONLY,
0)) < 0)) {
|| (fd = os_open((char *)fname, O_RDONLY, 0)) < 0)) {
--no_wait_return;
msg_scroll = msg_save;
if (fd < 0)
@ -2157,10 +2155,10 @@ readfile_charconvert (
if (eval_charconvert(fenc, enc_utf8 ? (char_u *)"utf-8" : p_enc,
fname, tmpname) == FAIL)
errmsg = (char_u *)_("Conversion with 'charconvert' failed");
if (errmsg == NULL && (*fdp = mch_open((char *)tmpname,
O_RDONLY, 0)) < 0)
if (errmsg == NULL && (*fdp = os_open((char *)tmpname, O_RDONLY, 0)) < 0) {
errmsg = (char_u *)_("can't read output of 'charconvert'");
}
}
if (errmsg != NULL) {
/* Don't use emsg(), it breaks mappings, the retry with
@ -2174,8 +2172,9 @@ readfile_charconvert (
}
/* If the input file is closed, open it (caller should check for error). */
if (*fdp < 0)
*fdp = mch_open((char *)fname, O_RDONLY, 0);
if (*fdp < 0) {
*fdp = os_open((char *)fname, O_RDONLY, 0);
}
return tmpname;
}
@ -2737,7 +2736,7 @@ buf_write (
break;
}
}
fd = mch_open((char *)IObuff,
fd = os_open((char *)IObuff,
O_CREAT|O_WRONLY|O_EXCL|O_NOFOLLOW, perm);
if (fd < 0) /* can't write in directory */
backup_copy = TRUE;
@ -2791,8 +2790,7 @@ buf_write (
else
backup_ext = p_bex;
if (backup_copy
&& (fd = mch_open((char *)fname, O_RDONLY, 0)) >= 0) {
if (backup_copy && (fd = os_open((char *)fname, O_RDONLY, 0)) >= 0) {
int bfd;
char_u *copybuf, *wp;
int some_error = FALSE;
@ -2890,7 +2888,7 @@ buf_write (
os_remove((char *)backup);
/* Open with O_EXCL to avoid the file being created while
* we were sleeping (symlink hacker attack?) */
bfd = mch_open((char *)backup,
bfd = os_open((char *)backup,
O_WRONLY|O_CREAT|O_EXCL|O_NOFOLLOW,
perm & 0777);
if (bfd < 0) {
@ -3194,7 +3192,7 @@ nobackup:
* (this may happen when the user reached his quotum for number of files).
* Appending will fail if the file does not exist and forceit is FALSE.
*/
while ((fd = mch_open((char *)wfname, O_WRONLY | (append
while ((fd = os_open((char *)wfname, O_WRONLY | (append
? (forceit ? (
O_APPEND |
O_CREAT) :
@ -3515,8 +3513,8 @@ restore_backup:
MSG(_(e_interr));
out_flush();
}
if ((fd = mch_open((char *)backup, O_RDONLY, 0)) >= 0) {
if ((write_info.bw_fd = mch_open((char *)fname,
if ((fd = os_open((char *)backup, O_RDONLY, 0)) >= 0) {
if ((write_info.bw_fd = os_open((char *)fname,
O_WRONLY | O_CREAT | O_TRUNC,
perm & 0777)) >= 0) {
/* copy the file. */
@ -3646,7 +3644,7 @@ restore_backup:
int empty_fd;
if (org == NULL
|| (empty_fd = mch_open(org,
|| (empty_fd = os_open(org,
O_CREAT | O_EXCL | O_NOFOLLOW,
perm < 0 ? 0666 : (perm & 0777))) < 0)
EMSG(_("E206: patchmode: can't touch empty original file"));
@ -4615,7 +4613,7 @@ int vim_rename(char_u *from, char_u *to)
/* For systems that support ACL: get the ACL from the original file. */
acl = mch_get_acl(from);
#endif
fd_in = mch_open((char *)from, O_RDONLY, 0);
fd_in = os_open((char *)from, O_RDONLY, 0);
if (fd_in == -1) {
#ifdef HAVE_ACL
mch_free_acl(acl);
@ -4624,7 +4622,7 @@ int vim_rename(char_u *from, char_u *to)
}
/* Create the new file with same permissions as the original. */
fd_out = mch_open((char *)to,
fd_out = os_open((char *)to,
O_CREAT|O_EXCL|O_WRONLY|O_NOFOLLOW, (int)perm);
if (fd_out == -1) {
close(fd_in);
@ -4660,7 +4658,7 @@ int vim_rename(char_u *from, char_u *to)
errmsg = _("E210: Error reading \"%s\"");
to = from;
}
#ifndef UNIX /* for Unix mch_open() already set the permission */
#ifndef UNIX /* for Unix os_open() already set the permission */
os_setperm(to, perm);
#endif
#ifdef HAVE_ACL

7
src/nvim/macros.h
View File

@ -108,13 +108,12 @@
#endif
# define mch_fopen(n, p) fopen((n), (p))
# define mch_open(n, m, p) open((n), (m), (p))
/* mch_open_rw(): invoke mch_open() with third argument for user R/W. */
/* mch_open_rw(): invoke os_open() with third argument for user R/W. */
#if defined(UNIX) /* open in rw------- mode */
# define mch_open_rw(n, f) mch_open((n), (f), (mode_t)0600)
# define mch_open_rw(n, f) os_open((n), (f), (mode_t)0600)
#else
# define mch_open_rw(n, f) mch_open((n), (f), 0)
# define mch_open_rw(n, f) os_open((n), (f), 0)
#endif
#ifdef STARTUPTIME

6
src/nvim/memline.c
View File

@ -440,7 +440,7 @@ void ml_setname(buf_T *buf)
}
if (mfp->mf_fd == -1) { /* need to (re)open the swap file */
mfp->mf_fd = mch_open((char *)mfp->mf_fname, O_RDWR, 0);
mfp->mf_fd = os_open((char *)mfp->mf_fname, O_RDWR, 0);
if (mfp->mf_fd < 0) {
/* could not (re)open the swap file, what can we do???? */
EMSG(_("E301: Oops, lost the swap file!!!"));
@ -1517,7 +1517,7 @@ static time_t swapfile_info(char_u *fname)
/*
* print the original file name
*/
fd = mch_open((char *)fname, O_RDONLY, 0);
fd = os_open((char *)fname, O_RDONLY, 0);
if (fd >= 0) {
if (read_eintr(fd, &b0, sizeof(b0)) == sizeof(b0)) {
if (STRNCMP(b0.b0_version, "VIM 3.0", 7) == 0) {
@ -3329,7 +3329,7 @@ findswapname (
* Try to read block 0 from the swap file to get the original
* file name (and inode number).
*/
fd = mch_open((char *)fname, O_RDONLY, 0);
fd = os_open((char *)fname, O_RDONLY, 0);
if (fd >= 0) {
if (read_eintr(fd, &b0, sizeof(b0)) == sizeof(b0)) {
/*

21
src/nvim/os/fs.c
View File

@ -11,6 +11,7 @@
#include "nvim/misc2.h"
#include "nvim/path.h"
#include "nvim/strings.h"
#include "nvim/log.h"
#ifdef INCLUDE_GENERATED_DECLARATIONS
# include "os/fs.c.generated.h"
@ -150,6 +151,24 @@ static bool is_executable_in_path(const char_u *name)
return false;
}
/// Opens or creates a file and returns a non-negative integer representing
/// the lowest-numbered unused file descriptor, for use in subsequent system
/// calls (read, write, lseek, fcntl, etc.). If the operation fails, `-errno`
/// is returned, and no file is created or modified.
///
/// @param flags bitwise OR of flags defined in <fcntl.h>
/// @param mode permissions for the newly-created file (IGNORED if 'flags' is
/// not `O_CREAT` or `O_TMPFILE`)
/// @return file descriptor, or negative `errno` on failure
int os_open(const char* path, int flags, int mode)
{
uv_fs_t open_req;
int r = uv_fs_open(uv_default_loop(), &open_req, path, flags, mode, NULL);
uv_fs_req_cleanup(&open_req);
//`r` is the same as open_req.result, except when OOM. So just use `r`.
return r;
}
/// Get stat information for a file.
///
/// @return OK on success, FAIL if a failure occurred.
@ -291,7 +310,7 @@ int os_remove(const char *path)
/// Get the file information for a given path
///
/// @param file_descriptor File descriptor of the file.
/// @param path Path to the file.
/// @param[out] file_info Pointer to a FileInfo to put the information in.
/// @return `true` on success, `false` for failure.
bool os_get_file_info(const char *path, FileInfo *file_info)

4
src/nvim/undo.c
View File

@ -1045,7 +1045,7 @@ void u_write_undo(char_u *name, int forceit, buf_T *buf, char_u *hash)
if (os_file_exists(file_name)) {
if (name == NULL || !forceit) {
/* Check we can read it and it's an undo file. */
fd = mch_open((char *)file_name, O_RDONLY, 0);
fd = os_open((char *)file_name, O_RDONLY, 0);
if (fd < 0) {
if (name != NULL || p_verbose > 0) {
if (name == NULL)
@ -1089,7 +1089,7 @@ void u_write_undo(char_u *name, int forceit, buf_T *buf, char_u *hash)
goto theend;
}
fd = mch_open((char *)file_name,
fd = os_open((char *)file_name,
O_CREAT|O_WRONLY|O_EXCL|O_NOFOLLOW, perm);
if (fd < 0) {
EMSG2(_(e_not_open), file_name);