/usr/share/systemtap/tapset/uconversions-guru.stp is in systemtap-common 3.1-3ubuntu0.1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 | /**
* sfunction set_user_string - Writes a string to user memory
* @addr: The user address to write the string to
* @val: The string which is to be written
*
* Description: Writes the given string to a given user memory address.
* Reports an error when writing to the given address fails.
* Requires the use of guru mode (-g).
*/
function set_user_string (addr:long, val:string) %{ /* guru */
store_uderef_string (STAP_ARG_val, STAP_ARG_addr, MAXSTRINGLEN);
if (0) {
deref_fault: /* branched to from store_deref_string() */
snprintf (CONTEXT->error_buffer, sizeof(CONTEXT->error_buffer),
"user string copy fault at 0x%p [man error::fault]", (void *) (uintptr_t) STAP_ARG_addr);
CONTEXT->last_error = CONTEXT->error_buffer;
}
%}
/**
* sfunction set_user_string_n - Writes a string of given length to user memory
* @addr: The user address to write the string to
* @n: The maximum length of the string
* @val: The string which is to be written
*
* Description: Writes the given string up to a maximum given length to a given
* user memory address. Reports an error on string copy fault.
* Requires the use of guru mode (-g).
*/
function set_user_string_n (addr:long, n:long, val:string) %{ /* guru */
int64_t len = clamp_t(int64_t, STAP_ARG_n + 1, 1, MAXSTRINGLEN);
store_uderef_string (STAP_ARG_val, STAP_ARG_addr, len);
if (0) {
deref_fault: /* branched to from store_deref_string() */
snprintf (CONTEXT->error_buffer, sizeof(CONTEXT->error_buffer),
"user string copy fault at 0x%p [man error::fault]", (void *) (uintptr_t) STAP_ARG_addr);
CONTEXT->last_error = CONTEXT->error_buffer;
}
%}
/**
* sfunction set_user_long - Writes a long value to user memory
* @addr: The user address to write the long to
* @val: The long which is to be written
*
* Description: Writes the long value to a given user memory address.
* Reports an error when writing to the given address fails.
* Requires the use of guru mode (-g).
*/
function set_user_long (addr:long, val:long) %{ /* guru */
uwrite((long *) (intptr_t) STAP_ARG_addr, STAP_ARG_val);
if (0) {
deref_fault: /* branched to from uwrite() */
snprintf (CONTEXT->error_buffer, sizeof(CONTEXT->error_buffer),
"user long copy fault at 0x%p [man error::fault]", (void *) (uintptr_t) STAP_ARG_addr);
CONTEXT->last_error = CONTEXT->error_buffer;
}
%}
/**
* sfunction set_user_int - Writes an int value to user memory
* @addr: The user address to write the int to
* @val: The int which is to be written
*
* Description: Writes the int value to a given user memory address.
* Reports an error when writing to the given address fails.
* Requires the use of guru mode (-g).
*/
function set_user_int (addr:long, val:long) %{ /* guru */
uwrite((int *) (intptr_t) STAP_ARG_addr, STAP_ARG_val);
if (0) {
deref_fault: /* branched to from uwrite() */
snprintf (CONTEXT->error_buffer, sizeof(CONTEXT->error_buffer),
"user int copy fault at 0x%p [man error::fault]", (void *) (uintptr_t) STAP_ARG_addr);
CONTEXT->last_error = CONTEXT->error_buffer;
}
%}
/**
* sfunction set_user_short - Writes a short value to user memory
* @addr: The user address to write the short to
* @val: The short which is to be written
*
* Description: Writes the short value to a given user memory address.
* Reports an error when writing to the given address fails.
* Requires the use of guru mode (-g).
*/
function set_user_short (addr:long, val:long) %{ /* guru */
uwrite((short *) (intptr_t) STAP_ARG_addr, STAP_ARG_val);
if (0) {
deref_fault: /* branched to from uwrite() */
snprintf (CONTEXT->error_buffer, sizeof(CONTEXT->error_buffer),
"user short copy fault at 0x%p [man error::fault]", (void *) (uintptr_t) STAP_ARG_addr);
CONTEXT->last_error = CONTEXT->error_buffer;
}
%}
/**
* sfunction set_user_char - Writes a char value to user memory
* @addr: The user address to write the char to
* @val: The char which is to be written
*
* Description: Writes the char value to a given user memory address.
* Reports an error when writing to the given address fails.
* Requires the use of guru mode (-g).
*/
function set_user_char (addr:long, val:long) %{ /* guru */
uwrite((char *) (intptr_t) STAP_ARG_addr, STAP_ARG_val);
if (0) {
deref_fault: /* branched to from uwrite() */
snprintf (CONTEXT->error_buffer, sizeof(CONTEXT->error_buffer),
"user char copy fault at 0x%p [man error::fault]", (void *) (uintptr_t) STAP_ARG_addr);
CONTEXT->last_error = CONTEXT->error_buffer;
}
%}
/**
* sfunction set_user_pointer - Writes a pointer value to user memory.
* @addr: The user address to write the pointer to
* @val: The pointer which is to be written
*
* Description: Writes the pointer value to a given user memory address.
* Reports an error when writing to the given address fails.
* Requires the use of guru mode (-g).
*/
function set_user_pointer (addr:long, val:long) %{ /* guru */
uwrite((void **) (uintptr_t) STAP_ARG_addr, (uintptr_t)STAP_ARG_val);
if (0) {
deref_fault: /* branched to from uwrite() */
snprintf (CONTEXT->error_buffer, sizeof(CONTEXT->error_buffer),
"user pointer copy fault at 0x%p [man error::fault]", (void *) (uintptr_t) STAP_ARG_addr);
CONTEXT->last_error = CONTEXT->error_buffer;
}
%}
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