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-rw-r--r--erts/emulator/drivers/unix/unix_efile.c581
1 files changed, 16 insertions, 565 deletions
diff --git a/erts/emulator/drivers/unix/unix_efile.c b/erts/emulator/drivers/unix/unix_efile.c
index b250bac4dc..cf7af71b92 100644
--- a/erts/emulator/drivers/unix/unix_efile.c
+++ b/erts/emulator/drivers/unix/unix_efile.c
@@ -45,23 +45,6 @@
#include <fcntl.h>
#endif /* DARWIN */
-#ifdef VXWORKS
-#include <ioLib.h>
-#include <dosFsLib.h>
-#include <nfsLib.h>
-#include <sys/stat.h>
-/*
-** Not nice to include usrLib.h as MANY normal variable names get reported
-** as shadowing globals, like 'i' for example.
-** Instead we declare the only function we use here
-*/
-/*
- * #include <usrLib.h>
- */
-extern STATUS copy(char *, char *);
-#include <errno.h>
-#endif
-
#ifdef SUNOS4
# define getcwd(buf, size) getwd(buf)
#endif
@@ -93,276 +76,27 @@ extern STATUS copy(char *, char *);
#define DIR_MODE 0777
#endif
-#ifdef VXWORKS /* Currently only used on vxworks */
-
-#define EF_ALLOC(S) driver_alloc((S))
-#define EF_REALLOC(P, S) driver_realloc((P), (S))
-#define EF_SAFE_ALLOC(S) ef_safe_alloc((S))
-#define EF_SAFE_REALLOC(P, S) ef_safe_realloc((P), (S))
-#define EF_FREE(P) do { if((P)) driver_free((P)); } while(0)
-
-void erl_exit(int n, char *fmt, ...);
-
-static void *ef_safe_alloc(Uint s)
-{
- void *p = EF_ALLOC(s);
- if (!p) erl_exit(1,
- "unix efile drv: Can't allocate %lu bytes of memory\n",
- (unsigned long)s);
- return p;
-}
-
-#if 0 /* Currently not used */
-
-static void *ef_safe_realloc(void *op, Uint s)
-{
- void *p = EF_REALLOC(op, s);
- if (!p) erl_exit(1,
- "unix efile drv: Can't reallocate %lu bytes of memory\n",
- (unsigned long)s);
- return p;
-}
-
-#endif /* #if 0 */
-#endif /* #ifdef VXWORKS */
-
#define IS_DOT_OR_DOTDOT(s) \
(s[0] == '.' && (s[1] == '\0' || (s[1] == '.' && s[2] == '\0')))
-#ifdef VXWORKS
-static int vxworks_to_posix(int vx_errno);
-#endif
-
-/*
-** VxWorks (not) strikes again. Too long RESULTING paths
-** may give the infamous bus error. Have to check ALL
-** filenames and pathnames. No wonder the emulator is slow on
-** these cards...
-*/
-#ifdef VXWORKS
-#define CHECK_PATHLEN(Name, ErrInfo) \
- if (path_size(Name) > PATH_MAX) { \
- errno = ENAMETOOLONG; \
- return check_error(-1, ErrInfo); \
- }
-#else
-#define CHECK_PATHLEN(X,Y) /* Nothing */
-#endif
-
static int check_error(int result, Efile_error* errInfo);
static int
check_error(int result, Efile_error *errInfo)
{
if (result < 0) {
-#ifdef VXWORKS
- errInfo->posix_errno = errInfo->os_errno = vxworks_to_posix(errno);
-#else
errInfo->posix_errno = errInfo->os_errno = errno;
-#endif
return 0;
}
return 1;
}
-#ifdef VXWORKS
-
-/*
- * VxWorks has different error codes for different file systems.
- * We map those to POSIX ones.
- */
-static int
-vxworks_to_posix(int vx_errno)
-{
- DEBUGF(("[vxworks_to_posix] vx_errno: %08x\n", vx_errno));
- switch (vx_errno) {
- /* dosFsLib mapping */
-#ifdef S_dosFsLib_FILE_ALREADY_EXISTS
- case S_dosFsLib_FILE_ALREADY_EXISTS: return EEXIST;
-#else
- case S_dosFsLib_FILE_EXISTS: return EEXIST;
-#endif
-#ifdef S_dosFsLib_BAD_DISK
- case S_dosFsLib_BAD_DISK: return EIO;
-#endif
-#ifdef S_dosFsLib_CANT_CHANGE_ROOT
- case S_dosFsLib_CANT_CHANGE_ROOT: return EINVAL;
-#endif
-#ifdef S_dosFsLib_NO_BLOCK_DEVICE
- case S_dosFsLib_NO_BLOCK_DEVICE: return ENOTBLK;
-#endif
-#ifdef S_dosFsLib_BAD_SEEK
- case S_dosFsLib_BAD_SEEK: return ESPIPE;
-#endif
- case S_dosFsLib_VOLUME_NOT_AVAILABLE: return ENXIO;
- case S_dosFsLib_DISK_FULL: return ENOSPC;
- case S_dosFsLib_FILE_NOT_FOUND: return ENOENT;
- case S_dosFsLib_NO_FREE_FILE_DESCRIPTORS: return ENFILE;
- case S_dosFsLib_INVALID_NUMBER_OF_BYTES: return EINVAL;
- case S_dosFsLib_ILLEGAL_NAME: return EINVAL;
- case S_dosFsLib_CANT_DEL_ROOT: return EACCES;
- case S_dosFsLib_NOT_FILE: return EISDIR;
- case S_dosFsLib_NOT_DIRECTORY: return ENOTDIR;
- case S_dosFsLib_NOT_SAME_VOLUME: return EXDEV;
- case S_dosFsLib_READ_ONLY: return EACCES;
- case S_dosFsLib_ROOT_DIR_FULL: return ENOSPC;
- case S_dosFsLib_DIR_NOT_EMPTY: return EEXIST;
- case S_dosFsLib_NO_LABEL: return ENXIO;
- case S_dosFsLib_INVALID_PARAMETER: return EINVAL;
- case S_dosFsLib_NO_CONTIG_SPACE: return ENOSPC;
- case S_dosFsLib_FD_OBSOLETE: return EBADF;
- case S_dosFsLib_DELETED: return EINVAL;
- case S_dosFsLib_INTERNAL_ERROR: return EIO;
- case S_dosFsLib_WRITE_ONLY: return EACCES;
- /* nfsLib mapping - is needed since Windriver has used */
- /* inconsistent error codes (errno.h/nfsLib.h). */
- case S_nfsLib_NFS_OK: return 0;
- case S_nfsLib_NFSERR_PERM: return EPERM;
- case S_nfsLib_NFSERR_NOENT: return ENOENT;
- case S_nfsLib_NFSERR_IO: return EIO;
- case S_nfsLib_NFSERR_NXIO: return ENXIO;
-#ifdef S_nfsLib_NFSERR_ACCES
- case S_nfsLib_NFSERR_ACCES: return EACCES;
-#else
- case S_nfsLib_NFSERR_ACCESS: return EACCES;
-#endif
- case S_nfsLib_NFSERR_EXIST: return EEXIST;
- case S_nfsLib_NFSERR_NODEV: return ENODEV;
- case S_nfsLib_NFSERR_NOTDIR: return ENOTDIR;
- case S_nfsLib_NFSERR_ISDIR: return EISDIR;
- case S_nfsLib_NFSERR_FBIG: return EFBIG;
- case S_nfsLib_NFSERR_NOSPC: return ENOSPC;
- case S_nfsLib_NFSERR_ROFS: return EROFS;
- case S_nfsLib_NFSERR_NAMETOOLONG: return ENAMETOOLONG;
- case S_nfsLib_NFSERR_NOTEMPTY: return EEXIST;
- case S_nfsLib_NFSERR_DQUOT: return ENOSPC;
- case S_nfsLib_NFSERR_STALE: return EINVAL;
- case S_nfsLib_NFSERR_WFLUSH: return ENXIO;
- /* And sometimes (...) the error codes are from ioLib (as in the */
- /* case of the (for nfsLib) unimplemented rename function) */
- case S_ioLib_DISK_NOT_PRESENT: return EIO;
-#if S_ioLib_DISK_NOT_PRESENT != S_ioLib_NO_DRIVER
- case S_ioLib_NO_DRIVER: return ENXIO;
-#endif
- case S_ioLib_UNKNOWN_REQUEST: return ENOSYS;
- case S_ioLib_DEVICE_TIMEOUT: return EIO;
-#ifdef S_ioLib_UNFORMATED
- /* Added (VxWorks 5.2 -> 5.3.1) */
- #if S_ioLib_UNFORMATED != S_ioLib_DEVICE_TIMEOUT
- case S_ioLib_UNFORMATED: return EIO;
- #endif
-#endif
-#if S_ioLib_DEVICE_TIMEOUT != S_ioLib_DEVICE_ERROR
- case S_ioLib_DEVICE_ERROR: return ENXIO;
-#endif
- case S_ioLib_WRITE_PROTECTED: return EACCES;
- case S_ioLib_NO_FILENAME: return EINVAL;
- case S_ioLib_CANCELLED: return EINTR;
- case S_ioLib_NO_DEVICE_NAME_IN_PATH: return EINVAL;
- case S_ioLib_NAME_TOO_LONG: return ENAMETOOLONG;
-#ifdef S_objLib_OBJ_UNAVAILABLE
- case S_objLib_OBJ_UNAVAILABLE: return ENOENT;
-#endif
-
- /* Temporary workaround for a weird error in passFs
- (VxWorks Simsparc only). File operation fails because of
- ENOENT, but errno is not set. */
-#ifdef SIMSPARCSOLARIS
- case 0: return ENOENT;
-#endif
-
- }
- /* If the error code matches none of the above, assume */
- /* it is a POSIX one already. The upper bits (>=16) are */
- /* cleared since VxWorks uses those bits to indicate in */
- /* what module the error occured. */
- return vx_errno & 0xffff;
-}
-
-static int
-vxworks_enotsup(Efile_error *errInfo)
-{
- errInfo->posix_errno = errInfo->os_errno = ENOTSUP;
- return 0;
-}
-
-static int
-count_path_length(char *pathname, char *pathname2)
-{
- static int stack[PATH_MAX / 2 + 1];
- int sp = 0;
- char *tmp;
- char *cpy = NULL;
- int i;
- int sum;
- for(i = 0;i < 2;++i) {
- if (!i) {
- cpy = EF_SAFE_ALLOC(strlen(pathname)+1);
- strcpy(cpy, pathname);
- } else if (pathname2 != NULL) {
- EF_FREE(cpy);
- cpy = EF_SAFE_ALLOC(strlen(pathname2)+1);
- strcpy(cpy, pathname2);
- } else
- break;
-
- for (tmp = strtok(cpy,"/"); tmp != NULL; tmp = strtok(NULL,"/")) {
- if (!strcmp(tmp,"..") && sp > 0)
- --sp;
- else if (strcmp(tmp,"."))
- stack[sp++] = strlen(tmp);
- }
- }
- if (cpy != NULL)
- EF_FREE(cpy);
- sum = 0;
- for(i = 0;i < sp; ++i)
- sum += stack[i]+1;
- return (sum) ? sum : 1;
-}
-
-static int
-path_size(char *pathname)
-{
- static char currdir[PATH_MAX+2];
- if (*pathname == '/')
- return count_path_length(pathname,NULL);
- ioDefPathGet(currdir);
- strcat(currdir,"/");
- return count_path_length(currdir,pathname);
-}
-
-#endif /* VXWORKS */
-
int
efile_mkdir(Efile_error* errInfo, /* Where to return error codes. */
char* name) /* Name of directory to create. */
{
- CHECK_PATHLEN(name,errInfo);
#ifdef NO_MKDIR_MODE
-#ifdef VXWORKS
- /* This is a VxWorks/nfs workaround for erl_tar to create
- * non-existant directories. (of some reason (...) VxWorks
- * returns, the *non-module-prefixed*, 0xd code when
- * trying to create a directory in a directory that doesn't exist).
- * (see efile_openfile)
- */
- if (mkdir(name) < 0) {
- struct stat sb;
- if (name[0] == '\0') {
- /* Return the correct error code enoent */
- errno = S_nfsLib_NFSERR_NOENT;
- } else if (stat(name, &sb) == OK) {
- errno = S_nfsLib_NFSERR_EXIST;
- } else if((strchr(name, '/') != NULL) && (errno == 0xd)) {
- /* Return the correct error code enoent */
- errno = S_nfsLib_NFSERR_NOENT;
- }
- return check_error(-1, errInfo);
- } else return 1;
-#else
return check_error(mkdir(name), errInfo);
-#endif
#else
return check_error(mkdir(name, DIR_MODE), errInfo);
#endif
@@ -372,16 +106,9 @@ int
efile_rmdir(Efile_error* errInfo, /* Where to return error codes. */
char* name) /* Name of directory to delete. */
{
- CHECK_PATHLEN(name, errInfo);
if (rmdir(name) == 0) {
return 1;
}
-#ifdef VXWORKS
- if (name[0] == '\0') {
- /* Return the correct error code enoent */
- errno = S_nfsLib_NFSERR_NOENT;
- }
-#else
if (errno == ENOTEMPTY) {
errno = EEXIST;
}
@@ -401,7 +128,6 @@ efile_rmdir(Efile_error* errInfo, /* Where to return error codes. */
}
errno = saved_errno;
}
-#endif
return check_error(-1, errInfo);
}
@@ -409,7 +135,6 @@ int
efile_delete_file(Efile_error* errInfo, /* Where to return error codes. */
char* name) /* Name of file to delete. */
{
- CHECK_PATHLEN(name,errInfo);
if (unlink(name) == 0) {
return 1;
}
@@ -457,32 +182,13 @@ efile_rename(Efile_error* errInfo, /* Where to return error codes. */
char* src, /* Original name. */
char* dst) /* New name. */
{
- CHECK_PATHLEN(src,errInfo);
- CHECK_PATHLEN(dst,errInfo);
-#ifdef VXWORKS
-
- /* First check if src == dst, if so, just return. */
- /* VxWorks dos file system destroys the file otherwise, */
- /* VxWorks nfs file system rename doesn't work at all. */
- if(strcmp(src, dst) == 0)
- return 1;
-#endif
if (rename(src, dst) == 0) {
return 1;
}
-#ifdef VXWORKS
- /* nfs for VxWorks doesn't support rename. We try to emulate it */
- /* (by first copying src to dst and then deleting src). */
- if(errno == S_ioLib_UNKNOWN_REQUEST && /* error code returned
- by ioLib (!) */
- copy(src, dst) == OK &&
- unlink(src) == OK)
- return 1;
-#endif
if (errno == ENOTEMPTY) {
errno = EEXIST;
}
-#if defined (sparc) && !defined(VXWORKS)
+#if defined (sparc)
/*
* SunOS 4.1.4 reports overwriting a non-empty directory with a
* directory as EINVAL instead of EEXIST (first rule out the correct
@@ -543,7 +249,6 @@ int
efile_chdir(Efile_error* errInfo, /* Where to return error codes. */
char* name) /* Name of directory to make current. */
{
- CHECK_PATHLEN(name, errInfo);
return check_error(chdir(name), errInfo);
}
@@ -600,8 +305,6 @@ efile_readdir(Efile_error* errInfo, /* Where to return error codes. */
* If this is the first call, we must open the directory.
*/
- CHECK_PATHLEN(name, errInfo);
-
if (*p_dir_handle == NULL) {
dp = opendir(name);
if (dp == NULL)
@@ -641,26 +344,8 @@ efile_openfile(Efile_error* errInfo, /* Where to return error codes. */
struct stat statbuf;
int fd;
int mode; /* Open mode. */
-#ifdef VXWORKS
- char pathbuff[PATH_MAX+2];
- char sbuff[PATH_MAX*2];
- char *totbuff = sbuff;
- int nameneed;
-#endif
-
-
- CHECK_PATHLEN(name, errInfo);
-
-#ifdef VXWORKS
- /* Have to check that it's not a directory. */
- if (stat(name,&statbuf) != ERROR && ISDIR(statbuf)) {
- errno = EISDIR;
- return check_error(-1, errInfo);
- }
-#endif
if (stat(name, &statbuf) >= 0 && !ISREG(statbuf)) {
-#if !defined(VXWORKS) && !defined(OSE)
/*
* For UNIX only, here is some ugly code to allow
* /dev/null to be opened as a file.
@@ -677,12 +362,9 @@ efile_openfile(Efile_error* errInfo, /* Where to return error codes. */
}
}
if (!(dev_null_ino && statbuf.st_ino == dev_null_ino)) {
-#endif
errno = EISDIR;
return check_error(-1, errInfo);
-#if !defined(VXWORKS) && !defined(OSE)
}
-#endif
}
switch (flags & (EFILE_MODE_READ|EFILE_MODE_WRITE)) {
@@ -706,49 +388,14 @@ efile_openfile(Efile_error* errInfo, /* Where to return error codes. */
if (flags & EFILE_MODE_APPEND) {
mode &= ~O_TRUNC;
-#ifndef VXWORKS
- mode |= O_APPEND; /* Dont make VxWorks think things it shouldn't */
-#endif
+ mode |= O_APPEND;
}
if (flags & EFILE_MODE_EXCL) {
mode |= O_EXCL;
}
-#ifdef VXWORKS
- if (*name != '/') {
- /* Make sure it is an absolute pathname, because ftruncate needs it */
- ioDefPathGet(pathbuff);
- strcat(pathbuff,"/");
- nameneed = strlen(pathbuff) + strlen(name) + 1;
- if (nameneed > PATH_MAX*2)
- totbuff = EF_SAFE_ALLOC(nameneed);
- strcpy(totbuff,pathbuff);
- strcat(totbuff,name);
- fd = open(totbuff, mode, FILE_MODE);
- if (totbuff != sbuff)
- EF_FREE(totbuff);
- } else {
- fd = open(name, mode, FILE_MODE);
- }
-#else
fd = open(name, mode, FILE_MODE);
-#endif
-
-#ifdef VXWORKS
-
- /* This is a VxWorks/nfs workaround for erl_tar to create
- * non-existant directories. (of some reason (...) VxWorks
- * returns, the *non-module-prefixed*, 0xd code when
- * trying to write a file in a directory that doesn't exist).
- * (see efile_mkdir)
- */
- if ((fd < 0) && (strchr(name, '/') != NULL) && (errno == 0xd)) {
- /* Return the correct error code enoent */
- errno = S_nfsLib_NFSERR_NOENT;
- return check_error(-1, errInfo);
- }
-#endif
if (!check_error(fd, errInfo))
return 0;
@@ -797,11 +444,7 @@ efile_fsync(Efile_error *errInfo, /* Where to return error codes. */
int fd) /* File descriptor for file to sync. */
{
#ifdef NO_FSYNC
-#ifdef VXWORKS
- return check_error(ioctl(fd, FIOSYNC, 0), errInfo);
-#else
- undefined fsync
-#endif /* VXWORKS */
+ undefined fsync /* XXX: Really? */
#else
#if defined(DARWIN) && defined(F_FULLFSYNC)
return check_error(fcntl(fd, F_FULLFSYNC), errInfo);
@@ -818,21 +461,8 @@ efile_fileinfo(Efile_error* errInfo, Efile_info* pInfo,
struct stat statbuf; /* Information about the file */
int result;
-#ifdef VXWORKS
- if (*name == '\0') {
- errInfo->posix_errno = errInfo->os_errno = ENOENT;
- return 0;
- }
-#endif
-
- CHECK_PATHLEN(name, errInfo);
-
if (info_for_link) {
-#if (defined(VXWORKS))
- result = stat(name, &statbuf);
-#else
result = lstat(name, &statbuf);
-#endif
} else {
result = stat(name, &statbuf);
}
@@ -849,19 +479,9 @@ efile_fileinfo(Efile_error* errInfo, Efile_info* pInfo,
#ifdef NO_ACCESS
/* Just look at read/write access for owner. */
-#ifdef VXWORKS
-
- pInfo->access = FA_NONE;
- if(statbuf.st_mode & S_IRUSR)
- pInfo->access |= FA_READ;
- if(statbuf.st_mode & S_IWUSR)
- pInfo->access |= FA_WRITE;
-
-#else
pInfo->access = ((statbuf.st_mode >> 6) & 07) >> 1;
-#endif /* VXWORKS */
#else
pInfo->access = FA_NONE;
if (access(name, R_OK) == 0)
@@ -902,35 +522,6 @@ efile_write_info(Efile_error *errInfo, Efile_info *pInfo, char *name)
{
struct utimbuf tval;
- CHECK_PATHLEN(name, errInfo);
-
-#ifdef VXWORKS
-
- if (pInfo->mode != -1) {
- int fd;
- struct stat statbuf;
-
- fd = open(name, O_RDONLY, 0);
- if (!check_error(fd, errInfo))
- return 0;
- if (fstat(fd, &statbuf) < 0) {
- close(fd);
- return check_error(-1, errInfo);
- }
- if (pInfo->mode & S_IWUSR) {
- /* clear read only bit */
- statbuf.st_attrib &= ~DOS_ATTR_RDONLY;
- } else {
- /* set read only bit */
- statbuf.st_attrib |= DOS_ATTR_RDONLY;
- }
- /* This should work for dos files but not for nfs ditos, so don't
- * report errors (to avoid problems when running e.g. erl_tar)
- */
- ioctl(fd, FIOATTRIBSET, statbuf.st_attrib);
- close(fd);
- }
-#else
/*
* On some systems chown will always fail for a non-root user unless
* POSIX_CHOWN_RESTRICTED is not set. Others will succeed as long as
@@ -952,20 +543,10 @@ efile_write_info(Efile_error *errInfo, Efile_info *pInfo, char *name)
}
}
-#endif /* !VXWORKS */
-
tval.actime = pInfo->accessTime;
tval.modtime = pInfo->modifyTime;
-#ifdef VXWORKS
- /* VxWorks' utime doesn't work when the file is a nfs mounted
- * one, don't report error if utime fails.
- */
- utime(name, &tval);
- return 1;
-#else
return check_error(utime(name, &tval), errInfo);
-#endif
}
@@ -979,11 +560,6 @@ efile_write(Efile_error* errInfo, /* Where to return error codes. */
{
ssize_t written; /* Bytes written in last operation. */
-#ifdef VXWORKS
- if (flags & EFILE_MODE_APPEND) {
- lseek(fd, 0, SEEK_END); /* Naive append emulation on VXWORKS */
- }
-#endif
while (count > 0) {
if ((written = write(fd, buf, count)) < 0) {
if (errno != EINTR)
@@ -1012,12 +588,6 @@ efile_writev(Efile_error* errInfo, /* Where to return error codes */
ASSERT(iovcnt >= 0);
-#ifdef VXWORKS
- if (flags & EFILE_MODE_APPEND) {
- lseek(fd, 0, SEEK_END); /* Naive append emulation on VXWORKS */
- }
-#endif
-
while (cnt < iovcnt) {
if ((! iov[cnt].iov_base) || (iov[cnt].iov_len <= 0)) {
/* Empty buffer - skip */
@@ -1226,118 +796,6 @@ efile_seek(Efile_error* errInfo, /* Where to return error codes. */
int
efile_truncate_file(Efile_error* errInfo, int *fd, int flags)
{
-#ifdef VXWORKS
- off_t offset;
- char namebuf[PATH_MAX+1];
- char namebuf2[PATH_MAX+10];
- int new;
- int dummy;
- int i;
- int left;
- static char buff[1024];
- struct stat st;
- Efile_error tmperr;
-
- if ((offset = lseek(*fd, 0, 1)) < 0) {
- return check_error((int) offset,errInfo);
- }
- if (ftruncate(*fd, offset) < 0) {
- if (vxworks_to_posix(errno) != EINVAL) {
- return check_error(-1, errInfo);
- }
- /*
- ** Kludge
- */
- if(ioctl(*fd,FIOGETNAME,(int) namebuf) < 0) {
- return check_error(-1, errInfo);
- }
- for(i=0;i<1000;++i) {
- sprintf(namebuf2,"%s%d",namebuf,i);
- CHECK_PATHLEN(namebuf2,errInfo);
- if (stat(namebuf2,&st) < 0) {
- break;
- }
- }
- if (i > 1000) {
- errno = EINVAL;
- return check_error(-1, errInfo);
- }
- if (close(*fd) < 0) {
- return check_error(-1, errInfo);
- }
- if (efile_rename(&tmperr,namebuf,namebuf2) < 0) {
- i = check_error(-1,&tmperr);
- if (!efile_openfile(errInfo,namebuf,flags | EFILE_NO_TRUNCATE,
- fd,&dummy)) {
- *fd = -1;
- } else {
- *errInfo = tmperr;
- }
- return i;
- }
- if ((*fd = open(namebuf2, O_RDONLY, 0)) < 0) {
- i = check_error(-1,errInfo);
- efile_rename(&tmperr,namebuf2,namebuf); /* at least try */
- if (!efile_openfile(errInfo,namebuf,flags | EFILE_NO_TRUNCATE,
- fd,&dummy)) {
- *fd = -1;
- } else {
- lseek(*fd,offset,SEEK_SET);
- }
- return i;
- }
- /* Point of no return... */
-
- if ((new = open(namebuf,O_RDWR | O_CREAT, FILE_MODE)) < 0) {
- close(*fd);
- *fd = -1;
- return 0;
- }
- left = offset;
-
- while (left) {
- if ((i = read(*fd,buff,(left > 1024) ? 1024 : left)) < 0) {
- i = check_error(-1,errInfo);
- close(new);
- close(*fd);
- unlink(namebuf);
- efile_rename(&tmperr,namebuf2,namebuf); /* at least try */
- if (!efile_openfile(errInfo,namebuf,flags | EFILE_NO_TRUNCATE,
- fd,&dummy)) {
- *fd = -1;
- } else {
- lseek(*fd,offset,SEEK_SET);
- }
- return i;
- }
- left -= i;
- if (write(new,buff,i) < 0) {
- i = check_error(-1,errInfo);
- close(new);
- close(*fd);
- unlink(namebuf);
- rename(namebuf2,namebuf); /* at least try */
- if (!efile_openfile(errInfo,namebuf,flags | EFILE_NO_TRUNCATE,
- fd,&dummy)) {
- *fd = -1;
- } else {
- lseek(*fd,offset,SEEK_SET);
- }
- return i;
- }
- }
- close(*fd);
- unlink(namebuf2);
- close(new);
- i = efile_openfile(errInfo,namebuf,flags | EFILE_NO_TRUNCATE,fd,
- &dummy);
- if (i) {
- lseek(*fd,offset,SEEK_SET);
- }
- return i;
- }
- return 1;
-#else
#ifndef NO_FTRUNCATE
off_t offset;
@@ -1347,15 +805,11 @@ efile_truncate_file(Efile_error* errInfo, int *fd, int flags)
#else
return 1;
#endif
-#endif
}
int
efile_readlink(Efile_error* errInfo, char* name, char* buffer, size_t size)
{
-#ifdef VXWORKS
- return vxworks_enotsup(errInfo);
-#else
int len;
ASSERT(size > 0);
len = readlink(name, buffer, size-1);
@@ -1364,7 +818,6 @@ efile_readlink(Efile_error* errInfo, char* name, char* buffer, size_t size)
}
buffer[len] = '\0';
return 1;
-#endif
}
int
@@ -1377,21 +830,13 @@ efile_altname(Efile_error* errInfo, char* name, char* buffer, size_t size)
int
efile_link(Efile_error* errInfo, char* old, char* new)
{
-#ifdef VXWORKS
- return vxworks_enotsup(errInfo);
-#else
return check_error(link(old, new), errInfo);
-#endif
}
int
efile_symlink(Efile_error* errInfo, char* old, char* new)
{
-#ifdef VXWORKS
- return vxworks_enotsup(errInfo);
-#else
return check_error(symlink(old, new), errInfo);
-#endif
}
int
@@ -1406,8 +851,8 @@ efile_fadvise(Efile_error* errInfo, int fd, Sint64 offset,
}
#ifdef HAVE_SENDFILE
-// For some reason the maximum size_t cannot be used as the max size
-// 3GB seems to work on all platforms
+/* For some reason the maximum size_t cannot be used as the max size
+ 3GB seems to work on all platforms */
#define SENDFILE_CHUNK_SIZE ((1UL << 30) -1)
/*
@@ -1444,7 +889,7 @@ efile_sendfile(Efile_error* errInfo, int in_fd, int out_fd,
#if defined(__linux__)
ssize_t retval;
do {
- // check if *nbytes is 0 or greater than chunk size
+ /* check if *nbytes is 0 or greater than chunk size */
if (*nbytes == 0 || *nbytes > SENDFILE_CHUNK_SIZE)
retval = sendfile(out_fd, in_fd, offset, SENDFILE_CHUNK_SIZE);
else
@@ -1455,7 +900,7 @@ efile_sendfile(Efile_error* errInfo, int in_fd, int out_fd,
}
} while (retval == SENDFILE_CHUNK_SIZE);
if (written != 0) {
- // -1 is not returned by the linux API so we have to simulate it
+ /* -1 is not returned by the linux API so we have to simulate it */
retval = -1;
errno = EAGAIN;
}
@@ -1468,23 +913,29 @@ efile_sendfile(Efile_error* errInfo, int in_fd, int out_fd,
do {
fdrec.sfv_off = *offset;
len = 0;
- // check if *nbytes is 0 or greater than chunk size
+ /* check if *nbytes is 0 or greater than chunk size */
if (*nbytes == 0 || *nbytes > SENDFILE_CHUNK_SIZE)
fdrec.sfv_len = SENDFILE_CHUNK_SIZE;
else
fdrec.sfv_len = *nbytes;
retval = sendfilev(out_fd, &fdrec, 1, &len);
- if (retval != -1 || errno == EAGAIN || errno == EINTR) {
+
+ /* Sometimes sendfilev can return -1 and still send data.
+ When that happens we just pretend that no error happend. */
+ if (retval != -1 || errno == EAGAIN || errno == EINTR ||
+ len != 0) {
*offset += len;
*nbytes -= len;
written += len;
+ if (errno != EAGAIN && errno != EINTR && len != 0)
+ retval = len;
}
} while (len == SENDFILE_CHUNK_SIZE);
#elif defined(DARWIN)
int retval;
off_t len;
do {
- // check if *nbytes is 0 or greater than chunk size
+ /* check if *nbytes is 0 or greater than chunk size */
if(*nbytes > SENDFILE_CHUNK_SIZE)
len = SENDFILE_CHUNK_SIZE;
else
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-27 05:23:52 +0000